title: Seeking new methods.
mesh_terms: D003271:Contraceptive Agents, Female; D003272:Contraceptive Agents, Male; D005260:Female; D006801:Humans; D007267:Injections; D007434:Intrauterine Devices; D008599:Menstruation Disturbances / Q000209:etiology; D009640:Norethindrone; D010944:Plants; D011247:Pregnancy
chemical_list: D003271:Contraceptive Agents, Female; D003272:Contraceptive Agents, Male; D009640:Norethindrone