Multiple pregnancy induced by ovary hyperstimulation.
D003278:Contraceptives, Oral, Hormonal / Q000627:therapeutic use*; D005260:Female; D005300:Fertility Agents, Female / Q000627:therapeutic use*; D006801:Humans; D010053:Ovary / Q000187:drug effects* / Q000502:physiology; D011247:Pregnancy; D011272:Pregnancy, Multiple; D013268:Stimulation, Chemical
D003278:Contraceptives, Oral, Hormonal; D005300:Fertility Agents, Female