title: Clinical trial with subdermal implants of the progestin R-2323.
mesh_terms: D000293:Adolescent; D000328:Adult; D003270:Contraceptive Agents / Q000009:adverse effects; D003271:Contraceptive Agents, Female / Q000494:pharmacology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011372:Progestins / Q000009:adverse effects / Q000494:pharmacology*; D014592:Uterine Hemorrhage / Q000209:etiology
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D011372:Progestins