作者单位:
Dept Internal Med, San Francisco, CA USA
[1]
Univ Penn, Perelman Sch Med, Div Gen Internal Med, Philadelphia, PA 19104 USA
[2]
Thomas Jefferson Univ, Dept Emergency Med, Philadelphia, PA 19107 USA
[3]
Univ Calif San Francisco, Sch Med, San Francisco, CA 94143 USA
[4]
Univ Penn, Dept Emergency Med, Philadelphia, PA 19104 USA
[5]
发布时间
2015-09-04