[1] Perelman School of Medicine,Department of Anesthesiology and Critical Care
[2] University of Pennsylvania,Center for Healthcare Improvement and Patient Safety
[3] Department of Medicine,Leonard Davis Institute of Health Economics
[4] Perelman School of Medicine,Department of Psychiatry, Perelman School of Medicine
[5] University of Pennsylvania,Department of Surgery, Division of Traumatology
[6] University of Pennsylvania,School of Arts and Sciences
[7] Colonial,College of Arts and Sciences
[8] University of Pennsylvania,Department of Medicine, Division of Pulmonary
[9] Surgical Critical Care and Emergency Surgery,Center for Clinical Epidemiology and Biostatistics
[10] Perelman School of Medicine,Department of Family Medicine
[11] University of Pennsylvania,Department of Medical Anthropology
[12] School of Nursing,undefined
[13] University of Pennsylvania,undefined
[14] University of Pennsylvania,undefined
[15] New Mexico State University,undefined
[16] Allergy and Critical Care Medicine,undefined
[17] Perelman School of Medicine,undefined
[18] University of Pennsylvania,undefined
[19] Perelman School of Medicine,undefined
[20] University of Pennsylvania,undefined
[21] Perelman School of Medicine,undefined
[22] University of Pennsylvania,undefined
[23] School of Arts and Sciences,undefined
[24] University of Pennsylvania,undefined