米非司酮利凡诺及宫颈扩张棒终止18~26周妊娠临床观察
미비사동리범낙급궁경확장봉종지18~26주임신림상관찰
Clinical Observation on the Effects of Mifepristone,Ethacridine and Cervical Dilatation Bar to Terminate the 18~26weeks Pregnancy