title: The monthly injectable contraceptive: a two-year clinical trial.
mesh_terms: D000328:Adult; D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D004338:Drug Combinations; D004341:Drug Evaluation; D004958:Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008525:Medroxyprogesterone / Q000008:administration & dosage*; D011247:Pregnancy; D013997:Time Factors
chemical_list: D003271:Contraceptive Agents, Female; D004338:Drug Combinations; D004958:Estradiol; D008525:Medroxyprogesterone