作者单位:
Univ Penn, Perelman Sch Med, Dept Biostat & Epidemiol, Philadelphia, PA 19104 USA
[1]
Childrens Hosp Philadelphia, Dept Emergency Med, Philadelphia, PA 19104 USA
[2]
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
[3]
Univ Colorado, Sch Med, Dept Pediat, Aurora, CO USA
[4]
Childrens Hosp Philadelphia, Dept Biomed & Hlth Informat, Philadelphia, PA 19104 USA
[5]
发布时间
2017-12-20