Vitamin D supplementation prior to in vitro fertilisation in women with polycystic ovary syndrome: a protocol of a multicentre randomised, double-blind, placebo-controlled clinical trial

Hu, KL; Gan, KH; Wang, R; Li, WT; Wu, QF; Zheng, BH; Zou, LB; Zhang, S; Liu, YF; Wu, YQ; Chen, RX; Cao, WS; Yang, S; Liu, FT; Tian, LF; Zeng, H; Xu, HL; Qiu, SM; Yang, LH; Chen, X; Pan, XQ; Wu, XY; Mol, B; Li, R; Zhang, D

Zhang, D (corresponding author), Zhejiang Univ, Dept Reprod Endocrinol, Key Lab Reprod Genet, Minist Educ,Womens Hosp,Sch Med, Hangzhou, Peoples R China.; Li, R (corresponding author), Peking Univ Third Hosp, Dept Obstet & Gynaecol, Ctr Reprod Med, Beijing, Peoples R China.

BMJ OPEN, 2020; 10 (12):