It is compose of hormone which act to suppress the normal process of ovulation or changes the lining of uterus making it unlikely to conceive. Normally it consist of oestrogen (e.g. ethinyloestradiol) with/or without progestrogen (e.g levonogestrel).
: M8 q7 f; g& U- q; X8 I8 u1 YTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
5 D9 f. ^& T( k2 i# Ktvb now,tvbnow,bttvb |
發表於 2008-12-17 04:21 PM
| 
是咩啊～～～～～～～
