Contraception.
Wolley
R J
RJ
D003271:Contraceptive Agents, Female; D004343:Drug Implants; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D009644:Norgestrel; D013237:Stereoisomerism
D003271:Contraceptive Agents, Female; D004343:Drug Implants; D009644:Norgestrel; D016912:Levonorgestrel