作者单位:
Duke University Medical Center, Durham, United States
[1]
Cincinnati Children's Hospital, Cincinnati, United States
[2]
University of North Carolina School of Medicine, Division of Maternal-Fetal Medicine, 101 Manning
[3]
Ridge Regional Hospital, Ghana Health Service, Accra, Ghana
[4]
Wake Forest University Medical Center, Winston-Salem, United States
[5]
发布时间
2013-11-20