1. The likelihood of live birth and multiple birth after single versus double embryo transfer at the cleavage stage: a systematic review and meta-analysis 
Tarek A. Gelbaya, M.D., Ioanna Tsoumpou, M.D., Luciano G. Nardo, M.D. 
Fertility and Sterility 
Volume 94, Issue 3, Pages (August 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Quality of Reporting of Meta-analyses (QUOROM) statement flowchart.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Forest plots showing the results of (A) live birth rate, (B) multiple birth rate, and (C) implantation rate in both elective single and double embryo transfer groups.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions