| Affiliation: | 1. Department of Emergency Medicine, Vanderbilt University Medical Center, 703 Oxford House, 1313 21st Avenue South, Nashville, TN 37232-4700, USA;2. Department of Psychiatry, Vanderbilt University Medical Center, 1601 23rd Avenue South, Suite 1159, Nashville, TN 37212, USA;3. Division of Allergy, Pulmonary, and Critical Care, Department of Internal Medicine, Center for Health Services Research, Sixth Floor Medical Center East #6109, Vanderbilt University Medical Center, Nashville, TN 37232-8300, USA |
