Vitamin D status relates to reproductive outcome in women with polycystic ovary syndrome: Secondary analysis of a multicenter randomized controlled trial

Lubna Pal, Heping Zhang, Joanne Williams, Nanette F. Santoro, Michael P. Diamond, William D. Schlaff, Christos Coutifaris, Sandra A. Carson, Michael P. Steinkampf, Bruce R. Carr, Peter G. McGovern, Nicholas A. Cataldo, Gabriella G. Gosman, John E. Nestler, Evan Myers, Richard S. Legro