[1] HCA Healthcare, Riverside Community Hosp, Dept Anesthesiol, Riverside, CA USA
[2] HCA Healthcare Grad Med Educ, Nashville, TN USA
[3] Univ Calif Los Angeles, Dept Anesthesiol, Los Angeles, CA USA
[4] New York Presbyterian Hosp Columbia & Cornell, Dept Rehabil & Regenerat Med, New York, NY USA
[5] Univ Calif San Diego, Dept Anesthesiol, Div Pain, La Jolla, CA USA
[6] Univ Calif San Diego, Dept Anesthesiol, Div Reg Anesthesia, La Jolla, CA USA
[7] Univ Calif San Diego, Dept Anesthesiol, Div Perioperat Informat, La Jolla, CA USA
[8] Riverside Community Hosp, Dept Anesthesiol, 4445 Magnolia Ave, Riverside, CA 92501 USA