J. Olsen

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Options in making use of pregnancy history in planning and analysing studies of reproductive failure.

J. Olsen, 1994, Journal of epidemiology and community health.

The Safety of Penicillin V: Oral Penamecillin Use During Pregnancy The Importance and Limitation of Recall Bias

A. Czeizel, H. Sørensen, M. Rockenbauer, 1999 .

A Population‐based Case‐Control Teratological Study of Three Parenteral Penicillins G

A. Czeizel, H. Sørensen, M. Rockenbauer, 1999 .

Risk of liver and other types of cancer in patients with cirrhosis: A nationwide cohort study in Denmark

J. Olsen, H. Sørensen, S. Friis, 1998, Hepatology.

Do parents of children with congenital malformations have a higher cancer risk? A nationwide study in Denmark

J. Olsen, H. Hasle, O. Basso, 2002, British Journal of Cancer.

Induced abortion and placenta complications in the subsequent pregnancy

G. L. Nielsen, H. Larsen, J. Olsen, 2001, Acta obstetricia et gynecologica Scandinavica.

Self-Reported Data on Spontaneous Abortions Compared with Data Obtained by Computer Linkage with the Hospital Registry

J. Olsen, Lene Zeuthen Heidam, 1985, Scandinavian journal of social medicine.

Change in social status and risk of low birth weight in Denmark: population based cohort study

K. Christensen, O. Basso, A. M. Johansen, 1997, BMJ.

Is foetal growth reduction induced by smoking modified by body mass or gestational weight gain?

J. Olsen, Z. Weijin, J. Olsen, 1996, Scandinavian journal of social medicine.

Psychosocial distress during pregnancy and the risk of infantile colic: a follow‐up study

N. Thrane, E. Friis-Hasché, C. Søndergaard, 2003, Acta paediatrica.

Drug Use in Pregnancy. Principal Problems and a Review of Newer Utilization Studies

H. Sørensen, C. Olesen, G. L. Nielsen, 1996 .

Predictors of Smoking Cessation in Pregnancy

J. Olsen, J. Olsen, 1993, Scandinavian journal of social medicine.

Birth weight and risk of early-onset breast cancer (Denmark)

J. Olsen, H. Sørensen, J. Olsen, 2003, Cancer Causes & Control.

Perinatal correlates of specific histological types of testicular cancer in patients below 35 years of age: A case‐cohort study based on midwives' records in Denmark

J. Olsen, S. Sabroe, J. Olsen, 1998, International journal of cancer.

A birth weight adjusted comparison of perinatal mortality in the Faroe Islands and Denmark

J. Olsen, S. F. Olsen, J. Olsen, 1994, Scandinavian journal of social medicine.

The risk of limb deficiencies and other congenital abnormalities in children exposed in utero to calcium channel blockers

A. Czeizel, F. H. Steffensen, M. Rockenbauer, 2001, Acta obstetricia et gynecologica Scandinavica.

Health Complaints and Work Conditions among Lacquerers in the Danish Furniture Industry

S Sabroe, S. Sabroe, J Olsen, 1979, Scandinavian journal of social medicine.

Diet during pregnancy and the risk of cerebral palsy

D. Trichopoulos, E. Petridou, M. Koussouri, 1998, British Journal of Nutrition.

Admission for and mortality from primary venous thromboembolism in women of fertile age in Denmark, 1977-95

J. Olsen, H. Sørensen, J. Olsen, 1999, BMJ.

A Suggestion for Improving Intelligibility in Multivariate Confounder Adjustment Using Alcohol Intake and Birth Weight as an Example

J. Olsen, S. Olsen, 1991, Scandinavian journal of social medicine.

What is a population-based registry?

O. Basso, J Olsen, H T Sørensen, 1999, Scandinavian journal of public health.

Sumatriptan: What Do We Know About Fetal Risks?

C. Olesen, J. Olsen, 2001, Headache.

Gestational weight gain as a predictor of birth and placenta weight according to pre‐pregnancy body mass index

J. Olsen, Weijin Zhou, W. Zhou, 1997, Acta obstetricia et gynecologica Scandinavica.

Antiepileptic drug use, folic acid supplementation, and congenital abnormalities: a population-based case-control study.

E. Horváth-Puhó, H. Sørensen, J. Olsen, 2008, BJOG : an international journal of obstetrics and gynaecology.

Does maternal tobacco smoking modify the effect of alcohol on fetal growth?

J. Olsen, S. F. Olsen, A. C. Pereira, 1991, American journal of public health.

Cancer risk in users of calcium channel blockers.

J. Olsen, H. Sørensen, J. Mclaughlin, 1997, Hypertension.

Body mass index and delayed conception: a European Multicenter Study on Infertility and Subfecundity.

L. Bisanti, J. Olsen, M. Rebagliato, 2000, American journal of epidemiology.

Diurnal scrotal skin temperature and semen quality. The Danish First Pregnancy Planner Study Team.

T. K. Jensen, J. Olsen, J. Bonde, 2000, International journal of andrology.

Genome-wide analysis identifies 12 loci influencing human reproductive behavior

M. P. Concas, N. Eriksson, M. Nalls, 2016, Nature Genetics.

Hypothyroidism incidence in and around pregnancy: a Danish nationwide study.

P. Laurberg, J. Olsen, A. Carlé, 2016, European journal of endocrinology.

Time to pregnancy as a correlate of fecundity: differential persistence in trying to become pregnant as a source of bias.

J. Olsen, O. Basso, S. Juul, 2000, International journal of epidemiology.

The Danish Medical Birth Registry.

J. Olsen, L. Knudsen, J. Olsen, 1998, Danish medical bulletin.

Are long working hours and shiftwork risk factors for subfecundity? A study among couples from southern Thailand.

J. Olsen, A. Geater, P. Tuntiseranee, 1998, Occupational and environmental medicine.

Maternal adiposity prior to pregnancy is associated with ADHD symptoms in offspring: evidence from three prospective pregnancy cohorts

M. Järvelin, I. Moilanen, J. Olsen, 2008, International Journal of Obesity.

A framework for evaluation of secondary data sources for epidemiological research.

H T Sorensen, S Sabroe, J Olsen, 1996, International journal of epidemiology.

The teratogenic risk of trimethoprim-sulfonamides: a population based case-control study.

J. Olsen, A. Czeizel, H. Sørensen, 2001, Reproductive toxicology.

Population‐based case control study of the safety of sulfasalazine use during pregnancy

B. Nørgård, J. Olsen, A. Czeizel, 2001, Alimentary pharmacology & therapeutics.

Cigarette smoking in pregnancy and fetal growth. Does the type of tobacco play a role?

J Olsen, J. Olsen, J. Olsen, 1992, International journal of epidemiology.

Stress and salivary cortisol during pregnancy

J. Olsen, M. Hedegaard, S. Levine, 2005, Psychoneuroendocrinology.

Regional differences in waiting time to pregnancy: pregnancy-based surveys from Denmark, France, Germany, Italy and Sweden. The European Infertility and Subfecundity Study Group.

J. Olsen, W. Karmaus, S. Juul, 1999, Human reproduction.

Dietary risk factors for renal cell carcinoma in Denmark.

K. Overvad, J. Olsen, J. Mclaughlin, 1996, European journal of cancer.

What characterises a useful concept of causation in epidemiology?

J. Olsen, J. Olsen, 2003, Journal of epidemiology and community health.

Oral contraception and factor V Leiden mutation in relation to localization of deep vein thrombosis.

J. Olsen, B. Andersen, J. Olsen, 1998, Thrombosis research.

Low birth weight and preterm delivery as risk factors for asthma and atopic dermatitis in young adult males.

K. Rothman, J. Olsen, M. Gillman, 2000, Epidemiology.

Risk of colorectal cancer in relatives of patients with inflammatory bowel disease (Denmark)

J. Olsen, H. Sørensen, L. Mellemkjær, 1998, Cancer Causes & Control.

Fetal growth and blood pressure in a Danish population aged 31-51 years.

H T Sørensen, T Lauritzen, H. Sørensen, 2000, Scandinavian cardiovascular journal : SCJ.

Are alcohol intake and smoking associated with mycosis fungoides? A European multicentre case-control study.

W. Ahrens, P. Guénel, A. Stang, 2001, European journal of cancer.

Distress and reduced fertility: a follow-up study of first-pregnancy planners.

T. K. Jensen, N. Skakkebaek, J. Olsen, 1999, Fertility and sterility.

Time to pregnancy among Danish pharmacy assistants.

J. Olsen, I. Schaumburg, J. Olsen, 1989, Scandinavian journal of work, environment & health.

Augmentin treatment during pregnancy and the prevalence of congenital abnormalities: a population-based case-control teratologic study.

J. Olsen, A. Czeizel, H. Sørensen, 2001, European journal of obstetrics, gynecology, and reproductive biology.

A follow-up study of male exposure to welding and time to pregnancy.

T. K. Jensen, N. Skakkebaek, N. Skakkebæk, 1998, Reproductive toxicology.

Prenatal antibiotics and atopic dermatitis among 18‐month‐old children in the Danish National Birth Cohort

J. Olsen, V. Schlünssen, S. Timm, 2017, Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology.

Correlation between self‐reported gestational age and ultrasound measurements

J. Olsen, J. Westergaard, A. Olesen, 2004, Acta obstetricia et gynecologica Scandinavica.

A population‐based case‐control teratologic study of nalidixic acid

J. Olsen, A. Czeizel, H. Sørensen, 2001, International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics.

Use of cephalosporins during pregnancy and in the presence of congenital abnormalities: a population-based, case-control study.

J. Olsen, A. Czeizel, H. Sørensen, 2001, American journal of obstetrics and gynecology.