New oral contraceptive progestogens.
Harer
W B
WB
D003280:Contraceptives, Oral, Synthetic; D017135:Desogestrel; D005260:Female; D006801:Humans; D009652:Norpregnenes
D003280:Contraceptives, Oral, Synthetic; D009652:Norpregnenes; C033273:Gestodene; D017135:Desogestrel