1. Influence of vitamin D levels on in vitro fertilization outcomes in donor-recipient cycles 
Briana J. Rudick, M.D., Sue Ann Ingles, Ph.D., Karine Chung, M.D., M.S.C.E., Frank Z. Stanczyk, Ph.D., Richard J. Paulson, M.D., Kristin A. Bendikson, M.D. 
Fertility and Sterility 
Volume 101, Issue 2, Pages (February 2014)
DOI: /j.fertnstert
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Influence of race on the relationship between recipient vitamin D levels and pregnancy rates. NP = not pregnant; P = pregnant.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions