1. Day 4 versus day 3 embryo transfer: a prospective study of clinical outcomes 
Konstantinos Pantos, M.D., Evangelos Makrakis, M.D., Margaret Chronopoulou, B.Sc., Maria Biba, M.Sc., Anastasios Perdikaris, M.D., Alex Dafereras, M.D. 
Fertility and Sterility 
Volume 89, Issue 3, Pages (March 2008)
DOI: /j.fertnstert
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Flow chart of the randomized subjects. COH = controlled ovarian hyperstimulation.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions