title: [Clinical study of a long-acting progestogen contraceptive 3-cyclopentyl propionate of megestrol acetate (progestin no. 1)].
mesh_terms: D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D019290:Megestrol Acetate; D008597:Menstrual Cycle; D008598:Menstruation; D012098:Reproduction; D012102:Reproductive Control Agents; D012106:Research
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D012102:Reproductive Control Agents; D019290:Megestrol Acetate
keywords: Clinical Research; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Effectiveness; Evaluation; Family Planning; Megestrol Acetate; Menstrual Cycle; Menstruation; Reproduction; Reproductive Control Agents; Research Methodology; Use-effectiveness