title: Long-acting hormonal contraceptives--indispensable in preventing teen pregnancy.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Kaunitz
mesh_terms: D000293:Adolescent; D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D003692:Delayed-Action Preparations; D017135:Desogestrel / Q000008:administration & dosage / Q000009:adverse effects; D004343:Drug Implants; D005260:Female; D006801:Humans; D017258:Medroxyprogesterone Acetate / Q000008:administration & dosage* / Q000009:adverse effects; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000517:prevention & control*
chemical_list: D003271:Contraceptive Agents, Female; D003692:Delayed-Action Preparations; D004343:Drug Implants; C044815:etonogestrel; D017135:Desogestrel; D017258:Medroxyprogesterone Acetate