Authors
Qing-Qing Chang
Department of Obstetrics and Gynecology, Hunan Provincial People’s Hospital, Changsha, China
Chun-Yan Chen
Department of Obstetrics and Gynecology, Hunan Provincial People’s Hospital, Changsha, China
Zhao Chen
Department of Hematology, Hunan Provincial People’s Hospital, Changsha, China
Shuai Chang
Changsha Medical University, Changsha, China