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ORAL CONTRACEPTIVES AND BIRTH DEFECTS
Author(s) -
Smithells R. W.
Publication year - 1981
Publication title -
developmental medicine and child neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.658
H-Index - 143
eISSN - 1469-8749
pISSN - 0012-1622
DOI - 10.1111/j.1469-8749.1981.tb02469.x
Subject(s) - pregnancy , recall bias , medicine , birth control , population , obstetrics , family planning , gestation , folic acid , prospective cohort study , gynecology , pediatrics , research methodology , surgery , environmental health , biology , genetics , pathology