[Advances in the research on new generation of oral contraceptive agents].
Cao
S
S
Wang
Z
Z
D003280:Contraceptives, Oral, Synthetic; D006801:Humans; D009644:Norgestrel / Q000031:analogs & derivatives; D009652:Norpregnenes
D003280:Contraceptives, Oral, Synthetic; D009652:Norpregnenes; C033273:Gestodene; D009644:Norgestrel; C017576:norgestimate