1. Roy J. and Lucille A. Carver College of Medicine University of Iowa Iowa City Iowa USA
2. Department of Emergency Medicine Roy J. and Lucille A. Carver College of Medicine, University of Iowa Iowa City Iowa USA
3. Division of Pediatric Surgery Roy J. and Lucille A. Carver College of Medicine, University of Iowa Iowa City Iowa USA
4. Injury Prevention and Community Outreach University of Iowa Stead Family Children's Hospital, University of Iowa Iowa City Iowa USA
5. Department of Surgery, Roy J. and Lucille A. Carver College of Medicine University of Iowa Iowa City Iowa USA
6. Stead Family Department of Pediatrics Roy J. and Lucille A. Carver College of Medicine, University of Iowa Iowa City Iowa USA