[1] U. C. Wright, J. Chang, G. Jeng et al.. Assisted reproductive technology surveillance-United States, 2005[J]. MMWR Surveill Summ, 2008, 57(5): 1~23
[2] A. N. Andersen, U. Goossens, A. P. Ferraretti et al.. Assisted reproductive technology in europe, 2004: results generated from european registers by ESHRE[J]. Hom Reprod, 2008, 23(4): 756~771
[3] M. I. Evans, D. Ciorica, D. W. Britt et al.. Update on selective reduction [J]. Prenat Diagn, 2005, 25(9): 807~813
[5] R. L. Berkowitz, L. Lynch, R. Lapinski et al.. First-trimester transabdominal multifetal pregnancy reduction: a report of two hundred completed cases [J]. Am. J. Obstet. Gynecol., 1993, 169(1): 17~21
[6] Huang Hefeng, Zhu Yimin, Zhou Fuzhen et al.. Analysis of 55 cases of transvaginal multifetal pregnancy reduction [J]. Chinese J. Obstetrics and Gynecdogy, 2002, 37(9): 533~535
[7] M. I. Evans, J. D. Goldberg, J. Horenstein et al.. Selective terminatior for structural, chromosomal and mendelian anomalies: international experience [J]. Am. J. Obstet. Gynecol., 1999, 181(4): 893~897
[8] R. L. Berkowitz, J. L. Stone, K. A. Eddleman. One hundred consecutive cases of selective termination of an abnormal fetus in a multifetal gestation [J]. Obstet. Gynecol., 1997, 90(4): 606~610
[9] Wang Xietong, Li Hongyan, Fen Hao et al.. Clinical study of selective multifetal pregnancy reduction in second trimester [J]. Chinese J. Obsterics and Gynecology, 2007, 42(3): 152~156
[10] Markolf H. Niemz. Laser-Tissue Interactions-Fundamentals and Applications[M]. Zhang Zhenxi et al. Transl.. Beijing: Science Press, 2005. 128~131