2tlertzen H, Piaggio G, Wojdyla D, et.al. Comparison of vaginal and sub lingual misoprostol for second trimester abortion :random ized controlled equivalence trial[J]. Hum Reprod,2009; 24( I ): 106- I 12.
3Reynolds A, Ayres D, Costa MA, el al. How should success be delined v, hcn attempting medical resolution of first-trimester missed abortion [.1[. Obstetrics/ Gynecology,2005; 1 (5"1:17-18.
