1 Division of Pediatric Surgery, University of Utah, Primary Children's Hospital, Salt Lake City, Utah. Electronic address: katie.russell@hsc.utah.edu.
2 Division of Pediatric Surgery, University of Utah, Primary Children's Hospital, Salt Lake City, Utah.
3 Department of Pediatric Surgery, University of Colorado School of Medicine, Children's Hospital Colorado, Aurora, Colorado.
4 Department of Surgery, Children's Hospital Los Angeles, Los Angeles, California.
5 Division of Pediatric Surgery, Phoenix Children's Hospital.
6 Division of Pediatric Surgery, Oregon Health and Sciences, Portland, Oregon.
7 Division of Trauma, General Surgery, Surgical Critical Care, University of Washington, Harborview Medical Center, Seattle, Washington.
8 Department of General and Thoracic Surgery, Seattle Children's Hospital, Seattle, Washington.
9 Division of Pediatric Surgery, UCSF Benioff Children's Hospitals, San Francisco, California.
10 Department of Pediatric Surgery, Stanford University, Lucile Packard Children's Hospital, Palo Alto, California.
11 Division of Pediatric Surgery, University of California San Diego School of Medicine, San Diego, California.