?:authorAffiliation
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[\'Department of Social Medicine, College of Health Management, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, 110122, P.R. China.\', \'Department of Maternal and Child Health, School of Public Health, China Medical University, No.77 Puhe Road, Shenbeixin District, Shenyang, Liaoning Province, 110016, P.R. China.\', \'Department of Public Health Sciences, College of Medicine, Pennsylvania State University, 90 Hope Drive, Suite 2200, Hershey, PA, 17033, USA.\', \'Shenyang Women\'s and Children\'s Hospital, No.41 Shenzhou Road, Shenhe District, Shenyang, Liaoning Province, 110000, P.R. China.\', \'Department of Social Medicine, College of Health Management, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, 110122, P.R. China. xsyang@cmu.edu.cn.\']
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