2Lawn JE,Yakoob MY,Haws RA,et al.3.2million stillbirths,epidemiology and overview of the evidence review[J]. BMC Pregnancy Childbirth, 2009(Suppl1): S2.
3DerSimonian R, Kacker R. Random-effects model for meta-analysis of clinical trials, an update [J].Contemp Clin Trials,2007,28(2): 105-114.
4Peters JL, Sutton AJ, Jones DR, et al. Comparison of two methods to detect publicatlon bias in meta-analysis[J]. JAMA, 2006,295(6), 676-680.
5McClure EM,Goldenberg RL,Bann CM.Maternal mor tahty.sttltbtrth and measures of obstetric care in developing and developed countries[J].Int J Gynaecol Obstet, 2007, 96(2), 139-146.
