1. School of Medicine, University of Electronic Science and Technology of China
2. GCP institution, Chengdu Women’s and Children’s Center Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
3. Department of Pharmacy, Chengdu Women’s and Children’s Center Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
4. Obstetrics Department, Chengdu Women’s and Children’s Center Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China