1. Chang Chen, Jin Wen Zhang, Dan Chen, Chun Ming Guo, and Jun Zhang are with the Ministry of Education—Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Hui Xin Zhang is with the Department of Obstetrics, Fourth Hospital of Hebei Medical University, Hebei, China. Ana Pilar Betran is with the UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, and...