作者单位:
Brown Univ, Dept Obstet & Gynecol, Providence, RI 02912 USA
[1]
Harvard Med Sch, Mt Auburn Hosp, Dept Obstet & Gynecol, Cambridge, MA 02238 USA
[2]
Columbia Univ, Med Ctr, Dept Obstet & Gynecol, New York, NY USA
[3]
Touro Coll Osteopath Med, New York, NY USA
[4]
Harvard Med Sch, Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[5]
发布时间
2017-09-22