| Affiliation: | 1. Department of Anesthesiology and Perioperative Medicine, UCLA Health, 757 Westwood Plaza, Suite 3325, Los Angeles, CA 90095-7403, USA;2. Department of Anesthesiology and Perioperative Medicine, UCLA Health, 757 Westwood Plaza, Suite 2331-L, Los Angeles, CA 90095-7403, USA;1. Department of Anesthesiology, University of Pittsburgh Physicians, University of Pittsburgh School of Medicine, Suite A-1305, Scaife Hall, 3550 Terrace Street, Pittsburgh, PA 15262, USA;2. Department of Anesthesiology, University of Pittsburgh Medical Center, Kaufman Medical Building, Suite 910, 3471 Fifth Avenue, Pittsburgh, PA 15213, USA;1. Sections of Orthopedic and Regional Anesthesiology, Department of Anesthesiology and Critical Care, University of Pennsylvania, 3400 Spruce Street, Dulles 6, Philadelphia, PA 19104, USA;2. Department of Anesthesiology, Weill Cornell Medical College, Hospital for Special Surgery, 535 East 70th street, New York, NY 10021, USA;3. Anesthesiology and Perioperative Care Service, VA Palo Alto Health Care System, Stanford University School of Medicine, 3801 Miranda Avenue, Palo Alto, CA 94304, USA |
