誘導排卵之過程機轉相當複雜，仍無法完全由two-cell two-gonadotrophin model解釋
LH於誘導排卵過程扮演角色仍具爭議
LH 補充對晚期濾泡期效果大於早期濾泡期
(LH is more effective in late follicular phase compare to early follicular phase)
LH 補充可用r-LH, HMG, hCG
http://humrep.oxfordjournals.org/content/16/4/803.2.full
