[1] Duke Univ, Med Ctr, Dept Anesthesiol, Durham, NC 27710 USA
[2] Scott & White Healthcare Syst, Dept Pharm, Temple, TX 76508 USA
[3] Texas A&M Univ, Dept Anesthesiol, Temple, TX USA
[4] Univ Calif San Francisco, Med Ctr, Dept Anesthesia & Perioperat Care, San Francisco, CA 94143 USA
[5] Univ Toronto, Dept Anesthesia, Toronto, ON, Canada
[6] Univ Pittsburgh, Sch Med, Dept Anesthesiol & Pediat, Pittsburgh, PA USA
[7] Med Coll Georgia, Sch Nursing, Augusta, GA 30912 USA
[8] Univ Kansas, Med Ctr, Dept Anesthesiol, Kansas City, KS 66103 USA
[9] Univ Wurzburg, Wurzburg, Germany
[10] Monash Univ, Dept Anesthesia & Perioperat Med, Alfred Hosp, Melbourne, Vic 3004, Australia
[11] Harvard Univ, Sch Med, Brigham & Womens Hosp, Boston, MA USA
[12] Duke Univ, Med Ctr, Dept Biometry & Bioinformat, Durham, NC USA
[13] Cleveland Clin, Dept Outcomes Res, Cleveland, OH 44106 USA
[14] Duke Univ, Nurse Anesthetist Program, Durham, NC USA
[15] Univ Hosp Geneva, Div Anesthesiol, Geneva, Switzerland
[16] Fac Med, Geneva, Switzerland
[17] Johns Hopkins Univ, Sch Med, Dept Surg, Div Plast Surg, Baltimore, MD 21205 USA
[18] Texas Childrens Hosp, Dept Anesthesiol, Houston, TX 77030 USA