1. Optimizing the number of cleavage stage embryos to transfer on day 3 in women 38 years of age and older: a Society for Assisted Reproductive Technology database study 
Judy E. Stern, Ph.D., Marlene B. Goldman, Sc.D., Harry Hatasaka, M.D., Todd A. MacKenzie, Ph.D., Eric S. Surrey, M.D., Catherine Racowsky, Ph.D. 
Fertility and Sterility 
Volume 91, Issue 3, Pages (March 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Pregnancy, delivery, and multiple rates according number transferred for women 38–42 years old. Outcomes of ART transfers are shown for increasing numbers of embryos transferred in each age group. The red diamonds indicate pregnancy rates, defined as the presence of at least one fetal heart per transfer. Also shown are delivery rate per transfer (blue squares), twin rate per transfer (green triangles), and high-order multiple rates (purple boxes). The panels are women 38 years (A), 39 years (B), 40 years (C), and 41–42 years (D).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions