作者单位:
Department of Obstetrics and Gynecology, Georgetown University Hospital, Washington, DC, United
[1]
Department of Biomathematics and Biostatistics, Georgetown University Hospital, Washington, DC
[2]
Perinatal Diagnostic Center, Inova Alexandria Hospital, 4320 Seminary Road, Alexandria, VA 22304
[3]
发布时间
2013-11-20