Published in BMC Urol on February 28, 2014
The Danish National Patient Register. Scand J Public Health (2011) 12.93
The Danish Civil Registration System. Scand J Public Health (2011) 11.25
Perioperative surgical findings in congenital and acquired undescended testis. J Pediatr Surg (2010) 2.06
Nordic consensus on treatment of undescended testes. Acta Paediatr (2007) 1.99
Determinants of cancer disparities: barriers to cancer screening, diagnosis, and treatment. Surg Oncol Clin N Am (2005) 1.98
Guidelines for Good Epidemiology Practices for Occupational and Environmental Epidemiologic Research. The Chemical Manufacturers Association's Epidemiology Task Group. J Occup Med (1991) 1.55
Denmark health system review. Health Syst Transit (2012) 1.45
Parental perception of optimal surgical age for correction of cryptorchidism: a multicenter surveillance study. Urology (2011) 1.45
Abnormal germ cell development in cryptorchidism. Horm Res (2001) 1.37
Surgical treatment of unilaterally undescended testes: testicular growth after randomization to orchiopexy at age 9 months or 3 years. J Urol (2007) 1.29
Autism prevalence trends over time in Denmark: changes in prevalence and age at diagnosis. Arch Pediatr Adolesc Med (2008) 1.21
Association between general practice referral rates and patients' socioeconomic status and access to specialised health care a population-based nationwide study. Health Policy (2009) 1.09
Referral bias in hospital register studies of geographical and industrial differences in health. Dan Med Bull (2004) 1.08
Socioeconomic differences in children's use of physician services in the Nordic countries. J Epidemiol Community Health (2002) 1.04
Danish registers on aspects of reproduction. Scand J Public Health (2011) 1.02
Non-participation in preventive child health examinations at the general practitioner in Denmark: a register-based study. Scand J Prim Health Care (2008) 0.99
Cryptorchidism concordance in monozygotic and dizygotic twin brothers, full brothers, and half-brothers. Fertil Steril (2008) 0.99
Age at cryptorchidism diagnosis and orchiopexy in Denmark: a population based study of 508,964 boys born from 1995 to 2009. J Urol (2011) 0.92
Socioeconomic and regional aspects in the use of specialized psychiatric care--a Finnish nationwide follow-up study. Eur J Public Health (2012) 0.92
Acquired undescended testis: putting the pieces together. Int J Androl (2011) 0.91
Socio-occupational status and congenital anomalies. Eur J Public Health (2009) 0.91
Acquired cryptorchidism is frequent in infancy and childhood. Int J Androl (2009) 0.90
Parental socioeconomic position and development of overweight in adolescence: longitudinal study of Danish adolescents. BMC Public Health (2010) 0.88
Barriers to preventive health care for young children. J Am Acad Nurse Pract (2002) 0.84
Sperm count of young men surgically treated for cryptorchidism in the first and second year of life: fertility is better in children treated at a younger age. Eur J Pediatr Surg (2009) 0.83
Accuracy of cryptorchidism diagnoses and corrective surgical treatment registration in the Danish National Patient Registry. J Urol (2012) 0.80
The Copenhagen Psychosocial Questionnaire--a tool for the assessment and improvement of the psychosocial work environment. Scand J Work Environ Health (2005) 4.34
Decreasing risk of colorectal cancer in patients with inflammatory bowel disease over 30 years. Gastroenterology (2012) 3.83
Selection bias due to parity-conditioning in studies of time trends in fertility. Epidemiology (2015) 3.39
Notification of occupational disease and the risk of work disability: a two-year follow-up study. Scand J Work Environ Health (2012) 2.59
Suicide and occupation: the impact of socio-economic, demographic and psychiatric differences. Psychol Med (2007) 2.03
Enteric Salmonella or Campylobacter infections and the risk of inflammatory bowel disease. Gut (2010) 1.94
Birth weight and prenatal exposure to polychlorinated biphenyls (PCBs) and dichlorodiphenyldichloroethylene (DDE): a meta-analysis within 12 European Birth Cohorts. Environ Health Perspect (2011) 1.84
Cryptorchidism according to maternal gestational smoking. Epidemiology (2007) 1.77
Occupational kneeling and meniscal tears: a magnetic resonance imaging study in floor layers. J Rheumatol (2009) 1.75
Job strain and the risk of depression: is reporting biased? Am J Epidemiol (2010) 1.69
Increased risk of inflammatory bowel disease in women with endometriosis: a nationwide Danish cohort study. Gut (2011) 1.62
Physical exercise during pregnancy and the risk of preterm birth: a study within the Danish National Birth Cohort. Am J Epidemiol (2008) 1.60
One-year randomized controlled trial with different physical-activity programs to reduce musculoskeletal symptoms in the neck and shoulders among office workers. Scand J Work Environ Health (2008) 1.59
Miscarriage and occupational activity: a systematic review and meta-analysis regarding shift work, working hours, lifting, standing, and physical workload. Scand J Work Environ Health (2012) 1.58
Effectiveness of small daily amounts of progressive resistance training for frequent neck/shoulder pain: randomised controlled trial. Pain (2010) 1.58
Healthcare databases in Europe for studying medicine use and safety during pregnancy. Pharmacoepidemiol Drug Saf (2014) 1.56
Collaboration is needed to co-ordinate European birth cohort studies. Int J Epidemiol (2004) 1.56
Male microchimerism and survival among women. Int J Epidemiol (2013) 1.53
Alcohol consumption during pregnancy and the risk of preterm delivery. Am J Epidemiol (2004) 1.53
Brothers and reduction of the birth weight of later-born siblings. Am J Epidemiol (2007) 1.52
The influence of occupational exposure on male reproductive function. Occup Med (Lond) (2006) 1.52
Epidemiological evidence on reproductive effects of persistent organochlorines in humans. Reprod Toxicol (2004) 1.51
Correlation between sperm motility and sperm chromatin structure assay parameters. Fertil Steril (2003) 1.49
Are serum levels of vitamin D associated with semen quality? Results from a cross-sectional study in young healthy men. Fertil Steril (2010) 1.48
Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts. Paediatr Perinat Epidemiol (2015) 1.47
Pregnancy-related pelvic pain is more frequent in women with increased body mass index. Acta Obstet Gynecol Scand (2011) 1.45
Congenital malformations related to maternal exposure to specific agents in biomedical research laboratories. J Occup Environ Med (2005) 1.44
Maternal use of selective serotonin reuptake inhibitors and risk of miscarriage - assessing potential biases. Paediatr Perinat Epidemiol (2014) 1.43
Health inequality--determinants and policies. Scand J Public Health (2012) 1.42
Effect on response rates of stamps vs a pre-printed business reply envelope in a mailed follow-up survey among middle-aged Danish men. Int J Epidemiol (2008) 1.40
Parental infertility and semen quality in male offspring: a follow-up study. Am J Epidemiol (2007) 1.39
The risk of cryptorchidism among sons of women working in horticulture in Denmark: a cohort study. Environ Health (2011) 1.39
Maternal folic acid supplement intake and semen quality in Danish sons: a follow-up study. Fertil Steril (2011) 1.39
Does smoking during pregnancy affect sons' sperm counts? Epidemiology (2003) 1.39
Fertility in four regions spanning large contrasts in serum levels of widespread persistent organochlorines: a cross-sectional study. Environ Health (2005) 1.34
Shift work and the risk of ischemic heart disease - a systematic review of the epidemiologic evidence. Scand J Work Environ Health (2009) 1.33
Is overweight a risk factor for reduced semen quality and altered serum sex hormone profile? Fertil Steril (2008) 1.31
Implementation of neck/shoulder exercises for pain relief among industrial workers: a randomized controlled trial. BMC Musculoskelet Disord (2011) 1.30
Maternal use of acetaminophen, ibuprofen, and acetylsalicylic acid during pregnancy and risk of cryptorchidism. Epidemiology (2010) 1.29
Physical, psychosocial, and individual risk factors for neck/shoulder pain with pressure tenderness in the muscles among workers performing monotonous, repetitive work. Spine (Phila Pa 1976) (2002) 1.28
Parent's age and the risk of oral clefts. Epidemiology (2005) 1.23
Does educational status impact adult mortality in Denmark? A twin approach. Am J Epidemiol (2010) 1.23
Is prenatal exposure to tobacco smoking a cause of poor semen quality? A follow-up study. Am J Epidemiol (2007) 1.21
Exposure to metal welding fume particles and risk for cardiovascular disease in Denmark: a prospective cohort study. Occup Environ Med (2010) 1.18
Mechanisms underlying the associations of maternal age with adverse perinatal outcomes: a sibling study of 264 695 Danish women and their firstborn offspring. Int J Epidemiol (2011) 1.17
Does weight loss improve semen quality and reproductive hormones? Results from a cohort of severely obese men. Reprod Health (2011) 1.17
European birth cohorts for environmental health research. Environ Health Perspect (2011) 1.16
Occupational risk of affective and stress-related disorders in the Danish workforce. Scand J Work Environ Health (2005) 1.16
Shift work, job stress, and late fetal loss: The National Birth Cohort in Denmark. J Occup Environ Med (2004) 1.16
Psychometric properties of the Danish Strength and Difficulties Questionnaire: the SDQ assessed for more than 70,000 raters in four different cohorts. PLoS One (2012) 1.15
Pregnancy and birth cohort resources in europe: a large opportunity for aetiological child health research. Paediatr Perinat Epidemiol (2013) 1.15
Birth cohort studies: past, present and future. Int J Epidemiol (2009) 1.14
A review of the effect of the psychosocial working environment on physiological changes in blood and urine. Basic Clin Pharmacol Toxicol (2009) 1.14
Male reproductive disorders in humans and prenatal indicators of estrogen exposure. A review of published epidemiological studies. Reprod Toxicol (2005) 1.13
Low concentration of circulating antimüllerian hormone is not predictive of reduced fecundability in young healthy women: a prospective cohort study. Fertil Steril (2012) 1.12
Cohort profile: the Metropolit 1953 Danish male birth cohort. Int J Epidemiol (2005) 1.11
Maternal occupational exposure and risk of specific birth defects. Occup Med (Lond) (2006) 1.11
Risk of lung cancer according to mild steel and stainless steel welding. Scand J Work Environ Health (2007) 1.11
Whether noise exposure causes stroke or hypertension is still not known. BMJ (2013) 1.08
The risk of noise-induced hearing loss in the Danish workforce. Noise Health (2007) 1.08
Referral bias in hospital register studies of geographical and industrial differences in health. Dan Med Bull (2004) 1.08
Work activities and risk of prematurity, low birth weight and pre-eclampsia: an updated review with meta-analysis. Occup Environ Med (2013) 1.07
Socioeconomic status and psychosocial work environment: results from a Danish national study. Scand J Public Health Suppl (2002) 1.06
Oxidative DNA damage in human sperm influences time to pregnancy. Hum Reprod (2003) 1.05
A cohort study of Parkinson's disease and other neurodegenerative disorders in Danish welders. J Occup Environ Med (2005) 1.05
Alcohol consumption at the time of conception and spontaneous abortion. Am J Epidemiol (2004) 1.05
Phthalates and perfluorooctanesulfonic acid in human amniotic fluid: temporal trends and timing of amniocentesis in pregnancy. Environ Health Perspect (2012) 1.04
Adverse reproduction outcomes among employees working in biomedical research laboratories. Scand J Work Environ Health (2002) 1.04
Childhood social environment and risk of drug and alcohol abuse in a cohort of Danish men born in 1953. Am J Epidemiol (2006) 1.04
Binge drinking in pregnancy and risk of fetal death. Obstet Gynecol (2008) 1.04
Association between pregnancy loss and urinary phthalate levels around the time of conception. Environ Health Perspect (2011) 1.03
Work related violence and threats and the risk of depression and stress disorders. J Epidemiol Community Health (2006) 1.03
Environmental factors and semen quality. Int J Occup Med Environ Health (2009) 1.03
Association between HLA-G genotype and risk of pre-eclampsia: a case-control study using family triads. Mol Hum Reprod (2004) 1.03
Cognitive function in childhood and early adulthood and injuries later in life: the Metropolit 1953 male birth cohort. Int J Epidemiol (2006) 1.02
Preconception care. BMJ (2009) 1.01
Occupational kneeling and radiographic tibiofemoral and patellofemoral osteoarthritis. J Occup Med Toxicol (2009) 1.01
The influence of birth weight and body mass in early adulthood on early coronary heart disease risk among Danish men born in 1953. Eur J Epidemiol (2008) 1.00
Intake of wine, beer and spirits and waiting time to pregnancy. Hum Reprod (2003) 1.00
Non-participation in preventive child health examinations at the general practitioner in Denmark: a register-based study. Scand J Prim Health Care (2008) 0.99
Cryptorchidism concordance in monozygotic and dizygotic twin brothers, full brothers, and half-brothers. Fertil Steril (2008) 0.99
Work environment and smoking cessation over a five-year period. Scand J Public Health (2004) 0.98
The association between circulating levels of antimüllerian hormone and follicle number, androgens, and menstrual cycle characteristics in young women. Fertil Steril (2012) 0.97
Physical exercise during pregnancy and fetal growth measures: a study within the Danish National Birth Cohort. Am J Obstet Gynecol (2009) 0.97
Neonatal and postneonatal mortality by maternal education--a population-based study of trends in the Nordic countries, 1981-2000. Eur J Public Health (2007) 0.97
Long-term sick leave and its risk factors during pregnancy among Danish hospital employees. Scand J Public Health (2004) 0.97
Birth dimensions and risk of depression in adulthood: cohort study of Danish men born in 1953. Br J Psychiatry (2005) 0.97
Reproductive hormone levels in men exposed to persistent organohalogen pollutants: a study of inuit and three European cohorts. Environ Health Perspect (2006) 0.97
Semen quality and reproductive hormones according to birthweight and body mass index in childhood and adult life: two decades of follow-up. Fertil Steril (2009) 0.96
Psychosocial working conditions and the risk of depression and anxiety disorders in the Danish workforce. BMC Public Health (2008) 0.96
Impact of diurnal scrotal temperature on semen quality. Reprod Toxicol (2002) 0.96
Associations of in utero exposure to perfluorinated alkyl acids with human semen quality and reproductive hormones in adult men. Environ Health Perspect (2013) 0.95
Alcohol use as predictor for infertility in a representative population of Danish women. Acta Obstet Gynecol Scand (2003) 0.95
Systematic review and meta-analyses: fever in pregnancy and health impacts in the offspring. Pediatrics (2014) 0.95
Social inequality in fetal and perinatal mortality in the Nordic countries. Scand J Public Health (2008) 0.94