title: Long-acting progestins--an update.
authors.affiliation: Department of Obstetrics and Gynaecology, National University of Singapore.
authors.forename: K
authors.initials: K
authors.lastname: Singh
authors.forename: O A
authors.initials: OA
authors.lastname: Viegas
authors.forename: S S
authors.initials: SS
authors.lastname: Ratnam
mesh_terms: D003271:Contraceptive Agents, Female; D005260:Female; D006801:Humans; D045167:Progesterone Congeners / Q000008:administration & dosage*
chemical_list: D003271:Contraceptive Agents, Female; D045167:Progesterone Congeners