作者单位:
Univ Michigan, Dept Anesthesiol, Ann Arbor, MI 48109 USA
[1]
Univ Michigan, Dept Obstet & Gynecol, Div Maternal Fetal Med, Ann Arbor, MI 48109 USA
[2]
Univ Michigan, Dept Anesthesiol, 1500 East Med Ctr Dr, Ann Arbor, MI 48109 USA
[3]
Wayne State Univ, Sch Med, Detroit, MI USA
[4]
Univ Michigan, Taubman Hlth Sci Lib, Ann Arbor, MI 48109 USA
[5]
Med Coll Wisconsin, Milwaukee, WI USA
[6]
St Marys Hosp, Dept Obstet & Gynecol, Div Maternal Fetal Med, Madison, WI USA
[7]
发布时间
2020-02-11