by Yu, Yunxian, PhD, Zhang, Shanchun, PhD, Wang, Guoying, MD, Hong, Xiumei, PhD, Mallow, Eric B., MD, Walker, Sheila O., PhD, Pearson, Colleen, BA, Heffner, Linda, MD, PhD, Zuckerman, Barry, MD, Wang, Xiaobin, MD, MPH, ScD
Published in American journal of obstetrics and gynecology (01.11.2013)