Optimizing contraceptive decisions: clinical implications of the triphasic randomized clinical trial. Proceedings of a symposium. Tucson, Arizona, January 21, 1989.
D003276:Contraceptives, Oral; D003279:Contraceptives, Oral, Sequential; D005260:Female; D006801:Humans
D003276:Contraceptives, Oral; D003279:Contraceptives, Oral, Sequential