title: The makings of a new contraceptive. An effective, safe, reversible implant protects for five years.
authors.forename: L
authors.initials: L
authors.lastname: Landman
mesh_terms: D001695:Biology; D003132:Commerce; D003267:Contraception; D003268:Contraception Behavior; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003710:Demography; D004467:Economics; D004703:Endocrine System; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005298:Fertility; D006728:Hormones; D016912:Levonorgestrel; D008389:Marketing of Health Services; D010827:Physiology; D011153:Population; D011157:Population Dynamics; D012102:Reproductive Control Agents; D012106:Research; D012725:Sexual Behavior
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D006728:Hormones; D012102:Reproductive Control Agents; D016912:Levonorgestrel
keywords: Biology; Commerce; Contraception; Contraceptive Agents, Female; Contraceptive Agents, Progestin--therapeutic use; Contraceptive Agents--therapeutic use; Contraceptive Effectiveness; Contraceptive Implants; Contraceptive Methods; Contraceptive Usage; Demographic Factors; Endocrine System; Family Planning; Fertility; Hormones; Levonorgestrel--therapeutic use; Macroeconomic Factors; Marketing; Perfect Contraceptives; Physiology; Population; Population Dynamics; Reproductive Behavior; Reproductive Control Agents; Research And Development; Theoretical Effectiveness