Postovulatory effects of levonorgestrel in emergency contraception.
Valenzuela
Carlos Y
CY
D003283:Contraceptives, Postcoital, Synthetic / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage*; D010060:Ovulation / Q000187:drug effects*
D003283:Contraceptives, Postcoital, Synthetic; D016912:Levonorgestrel