TY - GEN AU - Charlton,Brittany M AU - Mølgaard-Nielsen,Ditte AU - Svanström,Henrik AU - Wohlfahrt,Jan AU - Pasternak,Björn AU - Melbye,Mads TI - Maternal use of oral contraceptives and risk of birth defects in Denmark: prospective, nationwide cohort study SN - 1756-1833 PY - 2016///0502 KW - Abnormalities, Drug-Induced KW - epidemiology KW - Adolescent KW - Adult KW - Contraceptives, Oral KW - adverse effects KW - Denmark KW - Female KW - Humans KW - Maternal Age KW - Middle Aged KW - Pregnancy KW - Pregnancy Outcome KW - Prevalence KW - Prospective Studies KW - Risk Factors KW - Young Adult N1 - Publication Type: Journal Article; Observational Study; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1136/bmj.h6712 ER -