A multicenter randomized trial of personalized acupuncture, fixed acupuncture, letrozole, and placebo letrozole on live birth in infertile women with polycystic ovary syndrome oleh Shiya Huang, Min Hu, Ernest Hung Yu Ng, Elisabet Stener-Victorin, Yanhua Zheng, Qidan Wen, Cong Wang, Maohua Lai, Juan Li, Xingcheng Gao, Xinhua Wang, Zhenxing Hu, Tian Xia, Rongkui Hu, Jianping Liu, Xiaohui Wen, Shuna Li, Kewei Quan, Xingyan Liang, Hongcai Shang, Hongxia Ma, Jie Qiao