The Danish National Birth Cohort : a data source for studying preterm birth : Preterm deliveryOLSEN, Jørn.Acta obstetricia et gynecologica Scandinavica. 2005, Vol 84, Num 6, pp 539-540, issn 0001-6349, 2 p.Article

Sex ratio and twinning in women with hyperemesis or pre-eclampsiaBASSO, Olga; OLSEN, Jørn.Epidemiology (Cambridge, Mass.). 2001, Vol 12, Num 6, pp 747-749, issn 1044-3983Article

Monitoring fecundity over time: If we do it, then let's do it rightOLSEN, Jørn; RACHOOTIN, Pamela.American journal of epidemiology. 2003, Vol 157, Num 2, pp 94-97, issn 0002-9262, 4 p.Article

Are complications after an induced abortion associated with reproductive failures in a subsequent pregnancy?WEIJIN ZHOU; OLSEN, Jørn.Acta obstetricia et gynecologica Scandinavica. 2003, Vol 82, Num 2, pp 177-181, issn 0001-6349, 5 p.Article

Sumatriptan : What do we know about fetal risks?OLESEN, Charlotte; OLSEN, Jørn.Headache. 2001, Vol 41, Num 2, pp 206-207, issn 0017-8748Article

Storage of gases in rock caverns. Proceedings / International conference on storage of gases in rock caverns, Trondheim, 26-28 June 19898 = Le stockage du gaz dans des cavernes rocheuses. Comptes rendus / Conférence internationale sur le stockage des gaz dans des cavernes rocheuses, Trondheim, 26-28 juin 1989NILSEN, Bjorn; OLSEN, Jorn.International conference on storage of gases in rock caverns. 1989, IX-398 pConference Proceedings

How to study cancers with a possible intrauterine etiologyOLSEN, Jorn.European journal of endocrinology. 2006, Vol 155, issn 0804-4643, S59-S64, SUP1Conference Paper

Severe life events and impaired fetal growth : a nation-wide study with complete follow-upHANSEN PRECHT, Dorthe; ANDERSEN, Per Kragh; OLSEN, Jørn et al.Acta obstetricia et gynecologica Scandinavica. 2007, Vol 86, Num 3, pp 266-275, issn 0001-6349, 10 p.Article

Validation of epilepsy diagnoses in the Danish National Hospital RegisterCHRISTENSEN, Jakob; VESTERGAARD, Mogens; OLSEN, Jørn et al.Epilepsy research. 2007, Vol 75, Num 2-3, pp 162-170, issn 0920-1211, 9 p.Article

Prenatal risk indicators of a prolonged pregnancy. The Danish Birth Cohort 1998-2001OLESEN, Annette W; WESTERGAARD, Jes G; OLSEN, Jørn et al.Acta obstetricia et gynecologica Scandinavica. 2006, Vol 85, Num 11, pp 1338-1341, issn 0001-6349, 4 p.Article

Shift work, duration of pregnancy, and birth weight: The National Birth Cohort in DenmarkJIN LIANG ZHU; HJOLLUND, Niels H; OLSEN, Jørn et al.American journal of obstetrics and gynecology. 2004, Vol 191, Num 1, pp 285-291, issn 0002-9378, 7 p.Article

Higher risk of pre-eclampsia after change of partner. An effect of longer interpregnancy intervals?BASSO, Olga; CHRISTENSEN, Kaare; OLSEN, Jørn et al.Epidemiology (Cambridge, Mass.). 2001, Vol 12, Num 6, pp 624-629, issn 1044-3983Article

Asthma During Pregnancy and Clinical Outcomes in Offspring: A National Cohort StudyTEGETHOFF, Marion; OLSEN, Jørn; SCHAFFNER, Emmanuel et al.Pediatrics (Evanston). 2013, Vol 132, Num 3, pp 483-491, issn 0031-4005, 9 p.Article

Medical abortion and the risk of subsequent adverse pregnancy outcomesVIRK, Jasveer; JUN ZHANG; OLSEN, Jørn et al.The New England journal of medicine. 2007, Vol 357, Num 7, pp 648-653, issn 0028-4793, 6 p.Article

Do interviewers' health beliefs and habits modify responses to sensitive questions? A study using data collected from pregnant women by means of computer-assisted telephone interviewsANDERSEN, Anne-Marie Nybo; OLSEN, Jørn.American journal of epidemiology. 2002, Vol 155, Num 1, pp 95-100, issn 0002-9262Article

Cancer risks in children with congenital malformations in the nervous and circulatory system—A population based cohort studyYUELIAN SUN; OVERVAD, Kim; OLSEN, Jørn et al.Cancer epidemiology (Print). 2014, Vol 38, Num 4, pp 393-400, issn 1877-7821, 8 p.Article

Trimethoprim use before pregnancy and risk of congenital malformation: reanalyzed using a case-crossover design and a case-time-control designYUELIAN SUN; CHUN SEN WU; OLSEN, Jørn et al.Pharmacoepidemiology and drug safety. 2014, Vol 23, Num 10, pp 1076-1083, issn 1053-8569, 8 p.Article

Breastfeeding and Risk of Epilepsy in Childhood: A Birth Cohort StudyYUELIAN SUN; VESTERGAARD, Mogens; CHRISTENSEN, Jakob et al.The Journal of pediatrics. 2011, Vol 158, Num 6, pp 924-929, issn 0022-3476, 6 p.Article

Attention-deficit/hyperactivity disorder in the offspring following prenatal maternal bereavement: a nationwide follow-up study in DenmarkJIONG LI; OLSEN, Jørn; VESTERGAARD, Mogens et al.European child & adolescent psychiatry. 2010, Vol 19, Num 10, pp 747-753, issn 1018-8827, 7 p.Article

Fecundity and twinning. A study within the Danish National Birth CohortBASSO, Olga; CHRISTENSEN, Kaare; OLSEN, Jørn et al.Human reproduction (Oxford. Print). 2004, Vol 19, Num 10, pp 2222-2226, issn 0268-1161, 5 p.Article

Time to pregnancy as a correlate of fecundity: differential persistence in trying to become pregnant as a source of biasBASSO, Olga; JUUL, Svend; OLSEN, Jørn et al.International journal of epidemiology. 2000, Vol 29, Num 5, pp 856-861, issn 0300-5771Article

Sex Differences in Response to Anti-Tumor Necrosis Factor Therapy in Early and Established Rheumatoid Arthritis: Results from the DANBIO RegistryJAWAHEER, Damini; OLSEN, JØrn; HETLAND, Merete Lund et al.Journal of rheumatology. 2012, Vol 39, Num 1, pp 46-53, issn 0315-162X, 8 p.Article

Reliability of data from next-of-kin: Results from a case-control study of occupational and lifestyle risk factors for cancerKAERLEV, Linda; LYNGE, Elsebeth; SABROE, Svend et al.American journal of industrial medicine. 2003, Vol 44, Num 3, pp 298-303, issn 0271-3586, 6 p.Article

Paternal age and mortality in childrenJIN LIANG ZHU; VESTERGAARD, Mogens; MADSEN, Kreesten M et al.European journal of epidemiology. 2008, Vol 23, Num 7, pp 443-447, issn 0393-2990, 5 p.Article

Pre-natal exposure to paracetamol and risk of wheezing and asthma in children : A birth cohort studyREBORDOSA, Cristina; KOGEVINAS, Manolis; SORENSEN, Henrik T et al.International journal of epidemiology. 2008, Vol 37, Num 3, pp 583-590, issn 0300-5771, 8 p.Article