Oral contraceptives, thrombosis, and cyclical factors affecting veins.
D000328:Adult; D000818:Animals; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004971:Estrus; D005260:Female; D006801:Humans; D011247:Pregnancy; D013924:Thrombophlebitis / Q000209:etiology*; D014648:Varicose Veins / Q000209:etiology*
D003276:Contraceptives, Oral