1. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California
2. Department of Anesthesiology, University of Arkansas for Medical Sciences, Little Rock
3. Department of Anesthesiology, University of California, San Francisco
4. Department of Anesthesiology, University of Pittsburgh, Pittsburgh, Pennsylvania
5. Physical Medicine and Rehabilitation, NewYork–Presbyterian–Columbia and Cornell, New York, New York
6. University of California, Davis
7. Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
8. Library, University of Arkansas for Medical Sciences, Little Rock
9. Department of Psychiatry, University of Arkansas for Medical Sciences, Little Rock