title: Contraceptive implants.
authors.affiliation: Instituto Chileno de Medicina Reproductiva, Consultorio de Planificación Familiar, Santiago, Chile.
authors.forename: H B
authors.initials: HB
authors.lastname: Croxatto
authors.forename: S
authors.initials: S
authors.lastname: Díaz
authors.forename: I
authors.initials: I
authors.lastname: Sivin
mesh_terms: D000293:Adolescent; D000328:Adult; D002214:Capsules; D002582:Cervix Mucus / Q000187:drug effects; D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D004343:Drug Implants; D004867:Equipment Design; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D009644:Norgestrel / Q000008:administration & dosage* / Q000097:blood; D011247:Pregnancy; D011372:Progestins / Q000008:administration & dosage; D012307:Risk Factors
chemical_list: D002214:Capsules; D003271:Contraceptive Agents, Female; D004343:Drug Implants; D011372:Progestins; D009644:Norgestrel; D016912:Levonorgestrel