[1] Mem Hlth Univ Med Ctr, Childrens Hosp Savannah, Pediat, 4700 Waters Ave, Savannah, GA 31404 USA
[2] HCA Houston Healthcare Kingwood, Emergency Med, Houston, TX USA
[3] Janet Weis Childrens Hosp, Pediat, Geisinger Med Ctr, Danville, PA USA
[4] Penn State Hershey Med Ctr, Emergency Med & Pediat, Hershey, PA USA