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).
% L2 F0 c) @( i0 V* W公仔箱論壇1 f0 c# P. g4 K) x3 S+ ?
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發表於 2008-12-17 04:21 PM
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是咩啊～～～～～～～
