1. Boston Children's Hospital, Harvard Medical System, Boston, Massachusetts, USA.
2. Department of Surgery, University of California-Irvine, Orange, California, USA.
3. Division of Trauma, Critical Care, Burns, and Acute Care Surgery, Department of Surgery, Case Western Reserve University School of Medicine, MetroHealth Medical Center, Cleveland, Ohio, USA.
4. Divisions of General Surgery and Critical Care, Department of Surgery, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.
5. Department of Surgery, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.
6. Division of Trauma/Critical and Acute Care Surgery, Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas.
7. Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York, USA.