Published in Biomark Med on December 01, 2011
Reference intervals for urinary renal injury biomarkers KIM-1 and NGAL in healthy children. Biomark Med (2014) 0.87
Current developments in the use of biomarkers for juvenile idiopathic arthritis. Curr Rheumatol Rep (2014) 0.81
Serum protein profiling of adults and children with Crohn disease. J Pediatr Gastroenterol Nutr (2015) 0.76
Biomarkers for CNS involvement in pediatric lupus. Biomark Med (2015) 0.76
Contemporary management of TMJ involvement in JIA patients and its orofacial consequences. EPMA J (2016) 0.75
Genetic variants influencing response to methotrexate in juvenile idiopathic arthritis and rheumatoid arthritis. Rheumatol Int (2015) 0.75
Spirometric reference values from a sample of the general U.S. population. Am J Respir Crit Care Med (1999) 29.97
Biomarkers and surrogate endpoints: preferred definitions and conceptual framework. Clin Pharmacol Ther (2001) 14.78
Genetic variants regulating ORMDL3 expression contribute to the risk of childhood asthma. Nature (2007) 14.43
Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation. N Engl J Med (1992) 14.22
International League of Associations for Rheumatology classification of juvenile idiopathic arthritis: second revision, Edmonton, 2001. J Rheumatol (2004) 14.06
A simple estimate of glomerular filtration rate in children derived from body length and plasma creatinine. Pediatrics (1976) 13.83
A large-scale, consortium-based genomewide association study of asthma. N Engl J Med (2010) 9.17
Developmental pharmacology--drug disposition, action, and therapy in infants and children. N Engl J Med (2003) 7.51
Association of cytochrome P450 2C19 genotype with the antiplatelet effect and clinical efficacy of clopidogrel therapy. JAMA (2009) 6.80
Asthma prevalence, health care use, and mortality: United States, 2005-2009. Natl Health Stat Report (2011) 4.16
Reference ranges for spirometry across all ages: a new approach. Am J Respir Crit Care Med (2007) 4.03
Effect of 17q21 variants and smoking exposure in early-onset asthma. N Engl J Med (2008) 3.90
Loci on 20q13 and 21q22 are associated with pediatric-onset inflammatory bowel disease. Nat Genet (2008) 3.36
Advances in H1-antihistamines. N Engl J Med (2004) 3.27
The antiinflammatory mechanism of methotrexate. Increased adenosine release at inflamed sites diminishes leukocyte accumulation in an in vivo model of inflammation. J Clin Invest (1993) 2.66
Methotrexate in resistant juvenile rheumatoid arthritis. Results of the U.S.A.-U.S.S.R. double-blind, placebo-controlled trial. The Pediatric Rheumatology Collaborative Study Group and The Cooperative Children's Study Group. N Engl J Med (1992) 2.62
A genome-wide association study identifies novel and functionally related susceptibility Loci for Kawasaki disease. PLoS Genet (2009) 2.45
Biomarkers and surrogate markers: an FDA perspective. NeuroRx (2004) 2.20
Ontogeny of dextromethorphan O- and N-demethylation in the first year of life. Clin Pharmacol Ther (2007) 2.17
Age-related changes in laboratory values used in the diagnosis of anemia and iron deficiency. Am J Clin Nutr (1984) 2.09
Polyglutamation of methotrexate. Is methotrexate a prodrug? J Clin Invest (1985) 2.06
Polyglutamation of methotrexate with common polymorphisms in reduced folate carrier, aminoimidazole carboxamide ribonucleotide transformylase, and thymidylate synthase are associated with methotrexate effects in rheumatoid arthritis. Arthritis Rheum (2004) 2.04
In pediatric patients, age has more impact on dosing of vitamin K antagonists than VKORC1 or CYP2C9 genotypes. Blood (2010) 1.93
High plasma pravastatin concentrations are associated with single nucleotide polymorphisms and haplotypes of organic anion transporting polypeptide-C (OATP-C, SLCO1B1). Pharmacogenetics (2004) 1.87
Biomarkers: potential uses and limitations. NeuroRx (2004) 1.86
Dosing of clopidogrel for platelet inhibition in infants and young children: primary results of the Platelet Inhibition in Children On cLOpidogrel (PICOLO) trial. Circulation (2008) 1.82
A sequence variant on 17q21 is associated with age at onset and severity of asthma. Eur J Hum Genet (2010) 1.74
Neurotoxic effects and biomarkers of lead exposure: a review. Rev Environ Health (2009) 1.74
Developmental expression of human hepatic CYP2C9 and CYP2C19. J Pharmacol Exp Ther (2003) 1.67
Meta-analysis of folic acid supplementation trials on risk of cardiovascular disease and risk interaction with baseline homocysteine levels. Am J Cardiol (2010) 1.64
Report of the task force on blood pressure control in children. Pediatrics (1977) 1.60
Phenotype restricted genome-wide association study using a gene-centric approach identifies three low-risk neuroblastoma susceptibility Loci. PLoS Genet (2011) 1.57
Subtype-specific peripheral blood gene expression profiles in recent-onset juvenile idiopathic arthritis. Arthritis Rheum (2009) 1.56
Enhanced inhibition of thymidylate synthase by methotrexate polyglutamates. J Biol Chem (1985) 1.49
Analysis of warfarin therapy in pediatric patients: A prospective cohort study of 319 patients. Blood (1999) 1.41
Changes in liver volume from birth to adulthood: a meta-analysis. Liver Transpl (2005) 1.41
Developmental changes in pharmacokinetics and pharmacodynamics of warfarin enantiomers in Japanese children. Clin Pharmacol Ther (2000) 1.38
A genome-wide study reveals copy number variants exclusive to childhood obesity cases. Am J Hum Genet (2010) 1.36
Cough and cold medication use by US children, 1999-2006: results from the slone survey. Pediatrics (2008) 1.36
Reference intervals for serum creatinine concentrations: assessment of available data for global application. Clin Chem (2008) 1.29
Hemoglobin A1c levels in children and adolescents with diabetes mellitus. Diabetes Care (1981) 1.28
Biomarkers of acute kidney injury in children: discovery, evaluation, and clinical application. Pediatr Nephrol (2010) 1.25
Understanding the relative roles of pharmacogenetics and ontogeny in pediatric drug development and regulatory science. J Clin Pharmacol (2010) 1.24
Asthma and atopy are associated with chromosome 17q21 markers in Chinese children. Allergy (2009) 1.23
Genetic and clinical factors relating to warfarin dosing. Trends Pharmacol Sci (2009) 1.21
A double-blind, single-dose, crossover comparison of cetirizine, terfenadine, loratadine, astemizole, and chlorpheniramine versus placebo: suppressive effects on histamine-induced wheals and flares during 24 hours in normal subjects. J Allergy Clin Immunol (1990) 1.16
Developmental changes in human liver CYP2D6 expression. Drug Metab Dispos (2008) 1.13
Ontogeny of drug elimination by the human kidney. Pediatr Nephrol (2005) 1.11
Children, biobanks and the scope of parental consent. Eur J Hum Genet (2011) 1.10
Properties of transdermal histamine iontophoresis: differential effects of season, gender, and body region. J Invest Dermatol (1990) 1.09
Identification of a novel susceptibility locus for juvenile idiopathic arthritis by genome-wide association analysis. Arthritis Rheum (2009) 1.09
Identification of novel susceptibility Loci for kawasaki disease in a Han chinese population by a genome-wide association study. PLoS One (2011) 1.08
Evaluation of skin blood flow by laser Doppler flowmetry. Clin Dermatol (1996) 1.07
Folate, related B vitamins, and homocysteine in childhood and adolescence: potential implications for disease risk in later life. Pediatrics (2009) 1.06
Changes in the urinary excretion of creatinine, albumin and N-acetyl-beta-D-glucosaminidase with increasing age and maturity in healthy schoolchildren. Eur J Pediatr (1996) 0.98
Markers for bacterial infection in children with fever without source. Arch Dis Child (2011) 0.97
Age- and sex-related reference ranges of alanine aminotransferase levels in children: European paediatric HCV network. J Pediatr Gastroenterol Nutr (2009) 0.97
The effect of genotype on methotrexate polyglutamate variability in juvenile idiopathic arthritis and association with drug response. Arthritis Rheum (2011) 0.94
Adenosine and methotrexate polyglutamate concentrations in patients with juvenile arthritis. Rheumatology (Oxford) (2004) 0.94
The meaning of clinical remission in polyarticular juvenile idiopathic arthritis: gene expression profiling in peripheral blood mononuclear cells identifies distinct disease states. Arthritis Rheum (2009) 0.94
Anticoagulation in the young. Heart (2004) 0.94
Cetirizine: a pharmacokinetic and pharmacodynamic evaluation in children with seasonal allergic rhinitis. J Allergy Clin Immunol (1989) 0.94
Aspects of anticoagulation in children. Br J Haematol (2010) 0.93
Lack of correlation between pharmacokinetics and efficacy of low dose methotrexate in patients with rheumatoid arthritis. J Rheumatol (1995) 0.92
Pediatric inflammatory bowel disease: is it different? Dig Dis (2009) 0.92
Single-dose, multiple-dose, and population pharmacokinetics of pantoprazole in neonates and preterm infants with a clinical diagnosis of gastroesophageal reflux disease (GERD). Eur J Clin Pharmacol (2010) 0.91
Serum gamma-glutamyl transpeptidase activity in normal children. Am J Clin Pathol (1975) 0.90
Developmental renal physiology of the low birth weight pre-term newborn. J Urol (1996) 0.89
Developmental pharmacology of tramadol during infancy: ontogeny, pharmacogenetics and elimination clearance. Paediatr Anaesth (2010) 0.89
Plasma levels after oral methotrexate in children with juvenile rheumatoid arthritis. J Rheumatol (1993) 0.88
Fasting plasma homocysteine as a sensitive parameter of antifolate effect: a study of psoriasis patients receiving low-dose methotrexate treatment. Clin Pharmacol Ther (1989) 0.88
Pediatric rheumatology for the adult rheumatologist. J Clin Rheumatol (2008) 0.86
Comparison of five new antihistamines (H1-receptor antagonists) in patients with allergic rhinitis using nasal provocation studies and skin tests. Allergy (2002) 0.85
Pharmacokinetics and response to pravastatin in paediatric patients with familial hypercholesterolaemia and in paediatric cardiac transplant recipients in relation to polymorphisms of the SLCO1B1 and ABCB1 genes. Br J Clin Pharmacol (2006) 0.85
Biomarkers in pediatrics: children as biomarker orphans. Proteomics Clin Appl (2010) 0.83
Challenges for drug studies in children: CYP3A phenotyping as example. Drug Discov Today (2008) 0.83
Integration of pharmacogenetics and pharmacogenomics in drug development: implications for regulatory and medical decision making in pediatric diseases. J Clin Pharmacol (2011) 0.82
Skin reactions and itch sensation induced by epicutaneous histamine application in atopic dermatitis and controls. J Invest Dermatol (1989) 0.81
Juvenile idiopathic arthritis: new insights into classification, measures of outcome, and pharmacotherapy. Paediatr Drugs (2011) 0.81
Ethical considerations for pharmacogenomic testing in pediatric clinical care and research. Pharmacogenomics (2011) 0.81
Assessment of histamine pharmacodynamics by microvasculature response of histamine using histamine iontophoresis laser Doppler flowimetry. J Clin Pharmacol (2009) 0.81
A multicenter, randomized, open-label, pharmacokinetics and safety study of pantoprazole tablets in children and adolescents aged 6 through 16 years with gastroesophageal reflux disease. J Clin Pharmacol (2010) 0.79
Developmental pharmacology--drug disposition, action, and therapy in infants and children. N Engl J Med (2003) 7.51
Glycemic control and excess mortality in type 1 diabetes. N Engl J Med (2014) 6.39
Mortality in the Democratic Republic of Congo: a nationwide survey. Lancet (2006) 5.95
Excess Mortality among Persons with Type 2 Diabetes. N Engl J Med (2015) 3.20
Systematic genetic and genomic analysis of cytochrome P450 enzyme activities in human liver. Genome Res (2010) 2.06
Transcriptomic analysis of human lung development. Am J Respir Crit Care Med (2009) 1.87
Safety of codeine during breastfeeding: fatal morphine poisoning in the breastfed neonate of a mother prescribed codeine. Can Fam Physician (2007) 1.83
A population-based assessment of germline HOXB13 G84E mutation and prostate cancer risk. Eur Urol (2012) 1.55
Limited association of the 2988g > a single nucleotide polymorphism with CYP2D641 in black subjects. Clin Pharmacol Ther (2005) 1.49
Sun exposure may increase risk of prostate cancer in the high UV environment of New South Wales, Australia: a case-control study. Int J Cancer (2012) 1.48
Unique CYP2D6 activity distribution and genotype-phenotype discordance in black Americans. Clin Pharmacol Ther (2002) 1.45
Cisapride: a potential model substrate to assess cytochrome P4503A4 activity in vivo. Clin Pharmacol Ther (2003) 1.42
Validity of self-reported height and weight and derived body mass index in middle-aged and elderly individuals in Australia. Aust N Z J Public Health (2011) 1.41
Are current or future mesothelioma epidemics in Hong Kong the tragic legacy of uncontrolled use of asbestos in the past? Environ Health Perspect (2009) 1.32
Mesenchymal stem cells: lineage, plasticity, and skeletal therapeutic potential. Stem Cell Rev (2005) 1.29
PharmGKB summary: methotrexate pathway. Pharmacogenet Genomics (2011) 1.27
Information theory-based analysis of CYP2C19, CYP2D6 and CYP3A5 splicing mutations. Pharmacogenetics (2003) 1.24
Combined phenotypic assessment of cytochrome p450 1A2, 2C9, 2C19, 2D6, and 3A, N-acetyltransferase-2, and xanthine oxidase activities with the "Cooperstown 5+1 cocktail". Clin Pharmacol Ther (2003) 1.22
The basis of persistent bacterial infections. Trends Microbiol (2003) 1.21
Relationship between cancer mortality/incidence and ambient ultraviolet B irradiance in China. Cancer Causes Control (2010) 1.21
Pharmacokinetics and CYP2D6 genotypes do not predict metoprolol adverse events or efficacy in hypertension. Clin Pharmacol Ther (2004) 1.20
Ontogeny of drug metabolizing enzymes in the neonate. Semin Fetal Neonatal Med (2005) 1.19
Expression analysis of asthma candidate genes during human and murine lung development. Respir Res (2011) 1.16
Common CYP2D6 polymorphisms affecting alternative splicing and transcription: long-range haplotypes with two regulatory variants modulate CYP2D6 activity. Hum Mol Genet (2013) 1.16
CYP2D6*36 gene arrangements within the cyp2d6 locus: association of CYP2D6*36 with poor metabolizer status. Drug Metab Dispos (2006) 1.11
Screen-time, obesity, ageing and disability: findings from 91 266 participants in the 45 and Up Study. Public Health Nutr (2010) 1.09
Variability of CYP2J2 expression in human fetal tissues. J Pharmacol Exp Ther (2006) 1.04
Nuclear receptor expression in fetal and pediatric liver: correlation with CYP3A expression. Drug Metab Dispos (2005) 1.03
CYP2D6, SULT1A1 and UGT2B17 copy number variation: quantitative detection by multiplex PCR. Pharmacogenomics (2011) 1.02
CYP2D7-2D6 hybrid tandems: identification of novel CYP2D6 duplication arrangements and implications for phenotype prediction. Pharmacogenomics (2010) 1.02
Identification of Novel CYP2D7-2D6 Hybrids: Non-Functional and Functional Variants. Front Pharmacol (2010) 1.01
Behavior of adult human mesenchymal stem cells entrapped in alginate-GRGDY beads. Tissue Eng (2006) 1.00
Cervical cancer screening in Australia: modelled evaluation of the impact of changing the recommended interval from two to three years. BMC Public Health (2010) 1.00
Job quality and inequality: parents' jobs and children's emotional and behavioural difficulties. Soc Sci Med (2010) 0.99
Identification and characterization of novel sequence variations in the cytochrome P4502D6 (CYP2D6) gene in African Americans. Pharmacogenomics J (2005) 0.99
Biotransformation of fluticasone: in vitro characterization. Drug Metab Dispos (2006) 0.98
Clinical characteristics of children with juvenile dermatomyositis: the Childhood Arthritis and Rheumatology Research Alliance Registry. Arthritis Care Res (Hoboken) (2014) 0.98
CYP2D6 poor metabolizer status can be ruled out by a single genotyping assay for the -1584G promoter polymorphism. Clin Chem (2003) 0.97
PharmGKB summary: phenytoin pathway. Pharmacogenet Genomics (2012) 0.97
Pathways of carbamazepine bioactivation in vitro I. Characterization of human cytochromes P450 responsible for the formation of 2- and 3-hydroxylated metabolites. Drug Metab Dispos (2002) 0.96
Valproic acid pathway: pharmacokinetics and pharmacodynamics. Pharmacogenet Genomics (2013) 0.96
Gaseous and particulate emissions from prescribed burning in Georgia. Environ Sci Technol (2005) 0.95
Microbial quorum sensing: a tool or a target for antimicrobial therapy? Biotechnol Appl Biochem (2009) 0.95
Age related changes in fractional elimination pathways for drugs: assessing the impact of variable ontogeny on metabolic drug-drug interactions. J Clin Pharmacol (2013) 0.95
The effect of genotype on methotrexate polyglutamate variability in juvenile idiopathic arthritis and association with drug response. Arthritis Rheum (2011) 0.94
Development and refinement of pregnane X receptor (PXR) DNA binding site model using information theory: insights into PXR-mediated gene regulation. J Biol Chem (2004) 0.93
Trends in adverse reactions to trimethoprim-sulfamethoxazole. Pediatrics (2012) 0.93
Interindividual variability in acetaminophen sulfation by human fetal liver: implications for pharmacogenetic investigations of drug-induced birth defects. Birth Defects Res A Clin Mol Teratol (2008) 0.93
Fluticasone propionate pharmacogenetics: CYP3A4*22 polymorphism and pediatric asthma control. J Pediatr (2013) 0.92
NTP-CERHR expert panel report on the developmental toxicity of soy infant formula. Birth Defects Res B Dev Reprod Toxicol (2011) 0.92
Genome-wide prediction, display and refinement of binding sites with information theory-based models. BMC Bioinformatics (2003) 0.92
Multiple dose pharmacokinetics of paroxetine in children and adolescents with major depressive disorder or obsessive-compulsive disorder. Neuropsychopharmacology (2006) 0.92
Genetic determinants of variable metabolism have little impact on the clinical use of leading antipsychotics in the CATIE study. Genet Med (2008) 0.92
Effect of a triphasic oral contraceptive on drug-metabolizing enzyme activity as measured by the validated Cooperstown 5+1 cocktail. J Clin Pharmacol (2005) 0.91
Effect of diet on the development of drug metabolism by cytochrome P-450 enzymes in healthy infants. Pediatr Res (2006) 0.89
Developmental pharmacogenomics. Paediatr Anaesth (2011) 0.89
Could better jobs improve mental health? A prospective study of change in work conditions and mental health in mid-aged adults. J Epidemiol Community Health (2010) 0.89
Betaine-homocysteine methyltransferase: human liver genotype-phenotype correlation. Mol Genet Metab (2010) 0.89
Impact of the CYP2C19*17 allele on the pharmacokinetics of omeprazole and pantoprazole in children: evidence for a differential effect. Drug Metab Dispos (2010) 0.88
Lower urinary tract symptoms in relation to region of birth in 95,393 men living in Australia: the 45 and Up Study. World J Urol (2012) 0.88
Analysis of intracellular methotrexate polyglutamates in patients with juvenile idiopathic arthritis: effect of route of administration on variability in intracellular methotrexate polyglutamate concentrations. Arthritis Rheum (2010) 0.88
Antineutrophil cytoplasmic antibody-associated vasculitides: could geographic patterns be explained by ambient ultraviolet radiation? Arthritis Rheum (2009) 0.88
PharmGKB summary: carbamazepine pathway. Pharmacogenet Genomics (2011) 0.87
The role of CYP3A4 mRNA transcript with shortened 3'-untranslated region in hepatocyte differentiation, liver development, and response to drug induction. Mol Pharmacol (2011) 0.87
Cancer burden in China: a Bayesian approach. BMC Cancer (2013) 0.87
Reference intervals for urinary renal injury biomarkers KIM-1 and NGAL in healthy children. Biomark Med (2014) 0.87
Expenditure and resource utilisation for cervical screening in Australia. BMC Health Serv Res (2012) 0.86
Pathways of carbamazepine bioactivation in vitro: II. The role of human cytochrome P450 enzymes in the formation of 2-hydroxyiminostilbene. Drug Metab Dispos (2005) 0.86
CYP3A4-Mediated carbamazepine (CBZ) metabolism: formation of a covalent CBZ-CYP3A4 adduct and alteration of the enzyme kinetic profile. Drug Metab Dispos (2007) 0.85
Cotinine in human placenta predicts induction of gene expression in fetal tissues. Drug Metab Dispos (2012) 0.84
VKORC1 and CYP2C9 genotypes are predictors of warfarin-related outcomes in children. Pediatr Blood Cancer (2014) 0.84
Relationship between cancer survival and ambient ultraviolet B irradiance in China. Cancer Causes Control (2013) 0.84
Variability of histamine pharmacodynamic response in children with allergic rhinitis. J Clin Pharmacol (2013) 0.84
Estimating the effect of antiretroviral treatment during HIV seroconversion: impact of confounding in observational data. HIV Med (2003) 0.83
Sustained lower rates of HRT prescribing and breast cancer incidence in Australia since 2003. Breast Cancer Res Treat (2009) 0.83
Pathways of carbamazepine bioactivation in vitro. III. The role of human cytochrome P450 enzymes in the formation of 2,3-dihydroxycarbamazepine. Drug Metab Dispos (2008) 0.83
Identifying genomic and developmental causes of adverse drug reactions in children. Pharmacogenomics (2010) 0.83
Expression and regulation of nampt in human islets. PLoS One (2013) 0.83
CYP2D7 splice variants in human liver and brain: does CYP2D7 encode functional protein? Biochem Biophys Res Commun (2005) 0.82
Fetal lung and placental methylation is associated with in utero nicotine exposure. Epigenetics (2014) 0.82
Characterization of cytochrome P450 2D6.1 (CYP2D6.1), CYP2D6.2, and CYP2D6.17 activities toward model CYP2D6 substrates dextromethorphan, bufuralol, and debrisoquine. Drug Metab Dispos (2002) 0.82
Epigenetic regulation of ADME-related genes: focus on drug metabolism and transport. Drug Metab Dispos (2013) 0.82
Effect of CYP3A5 genotype, steroids, and azoles on tacrolimus in a pediatric renal transplant population. Pediatr Nephrol (2014) 0.81
Discovery of a novel nonfunctional cytochrome P450 2D6 allele, CYP2D642, in African American subjects. Clin Pharmacol Ther (2003) 0.81
Selective Toll--like receptor expression in human fetal lung. Pediatr Res (2010) 0.81
Developmental variations in metabolic capacity of flavin-containing mono-oxygenase 3 in childhood. Br J Clin Pharmacol (2011) 0.81
Developmental pharmacogenetics in pediatric rheumatology: utilizing a new paradigm to effectively treat patients with juvenile idiopathic arthritis with methotrexate. Hum Genomics Proteomics (2010) 0.81
A novel high-performance liquid chromatography/mass spectrometry method for improved selective and sensitive measurement of methotrexate polyglutamation status in human red blood cells. Rapid Commun Mass Spectrom (2009) 0.81
Genetic transmission of cytochrome P450 2D6 (CYP2D6) ultrarapid metabolism: implications for breastfeeding women taking codeine. Curr Drug Saf (2011) 0.80
Insulin pump-long-term effects on glycemic control: an observational study at 10 diabetes clinics in Sweden. Diabetes Technol Ther (2013) 0.80
Comparison of various urine collection intervals for caffeine and dextromethorphan phenotyping in children. J Clin Pharmacol (2004) 0.80
Low-dose methotrexate results in the selective accumulation of aminoimidazole carboxamide ribotide in an erythroblastoid cell line. J Pharmacol Exp Ther (2013) 0.79
Projections of cancer prevalence by phase of care: a potential tool for planning future health service needs. J Cancer Surviv (2013) 0.79
Global tests of P-values for multifactor dimensionality reduction models in selection of optimal number of target genes. BioData Min (2012) 0.79
Effects of tap water processing on the concentration of disinfection by-products. J Water Health (2011) 0.79
Choosing Wisely: the American College of Rheumatology's Top 5 for pediatric rheumatology. Arthritis Care Res (Hoboken) (2014) 0.78
Risk score modeling of multiple gene to gene interactions using aggregated-multifactor dimensionality reduction. BioData Min (2013) 0.78
Comprehensive quantitative measurement of folate polyglutamates in human erythrocytes by ion pairing ultra-performance liquid chromatography/tandem mass spectrometry. Rapid Commun Mass Spectrom (2012) 0.78