1. Progesterone vaginal ring versus vaginal gel for luteal support with in vitro fertilization: a randomized comparative study 
Laurel Stadtmauer, M.D., Ph.D., Kaylen M. Silverberg, M.D., Elizabeth S. Ginsburg, M.D., Herman Weiss, M.D., Brandon Howard, Ph.D. 
Fertility and Sterility 
Volume 99, Issue 6, Pages (May 2013)
DOI: /j.fertnstert
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Disposition of patients. MITT = modified intent-to-treat; PVR = P vaginal ring. ∗Reasons for discontinuation included lack of pregnancy, not meeting protocol requirements, noncompliance with protocol, investigator discretion, subject request to be withdrawn, AE, and loss to follow-up.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2013 American Society for Reproductive Medicine Terms and Conditions