?:authorAffiliation
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[\'National Center for Women and Children\'s Health, Chinese Center for Disease Control and Prevention, Beijing, China.\', \'Center for Health Behaviours Research, School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China.\', \'Shandong Province Hospital for Women and Children\'s Health, Jinan, China.\', \'Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.\', \'Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China.\', \'Women and Children\'s Health Care Hospital of Liaoning Province, Shenyang, China.\', \'School of Medicine, Women\'s Hospital, Zhejiang University, Hangzhou, China.\', \'Guangdong Women and Children Hospital, Guangzhou, China.\', \'Chong Qing Health Center for Women and Children, Chong Qing, China.\', \'First Affiliated Hospital of Medical College of Xi\'an Jiaotong University, Xi\'an, China.\', \'National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 13# Rd Nanwei, Xicheng, Beijing, China. linhong@chinawch.org.cn.\']
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