1. Effect of the initiation of progesterone supplementation in in vitro fertilization–embryo transfer outcomes: a prospective randomized controlled trial 
Jun Gao, Ph.D., Fang Gu, M.D., Ben-Yu Miao, Ph.D., Ming-Hui Chen, Ph.D., Can-Quan Zhou, M.D., Yan-Wen Xu, Ph.D. 
Fertility and Sterility 
Volume 109, Issue 1, Pages (January 2018)
DOI: /j.fertnstert
Copyright © 2017 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Flow chart on subject disposition. OHSS = ovarian hyperstimulation syndrome.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2017 American Society for Reproductive Medicine Terms and Conditions