3Gemzell - Danielsson K, Lalitkumar S. Second trimester Medical abor- tion with mifepristone - misoprostal and misoprostol alone : a review of methods and management [ J ]. Reproductive Health Matters, 2008 : 162 - 172.
4Fiala C, Swabn ML, Stephansson O, et al. The effect of non - ster- oidal anti - inflammatory drugs on medical abortion with mifepristone and misoprostol at 13 - 22 weeks gestation [ J ]. Hum Reprod, 2005, 20:3072 - 3077.
5Li CF, Wong CY, Chan YM, et al. A study of co - treatment of non- steroidal anti - inflammatory drugs ( NSAIDs ) with misoprostol for cervical priming before suction termination of first trimester pregnancy [ J]. Contraception,2003,67, 101 - 105.
6Smith GM, Stubblefield PG, Chirchirillo L, et al. Pain of first -tri- mester abortion: its quantification and relations with other variables [ J ]. Am J Obstet Gynecol, 1979,133:489 - 498.
