The Walnut Creek Contraceptive Drug Study. A prospective study of the side effects of oral contraceptives. Volume III, an interim report: A comparison of disease occurrence leading to hospitalization or death in users and nonusers of oral contraceptives.
D000293:Adolescent; D000328:Adult; D002140:California; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011446:Prospective Studies
D003276:Contraceptives, Oral