4Divsion of Acute Care Surgery, Department of Surgery, Johns Hopkins University, Baltimore, Maryland, USA
5Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland, USA
6Department of Emergency Medicine, Johns Hopkins University, Baltimore, Maryland, USA
7The Armstrong Institute for Patient Safety and Quality, Johns Hopkins Medicine, Baltimore, Maryland, USA
8Department of Health Policy and Management, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA