[1] Duke Univ, Med Ctr, Dept Anesthesiol, Durham, NC 27710 USA
[2] Duke Univ, Med Ctr, Dept Surg, Durham, NC 27710 USA
[3] Texas A&M Univ, Syst HSC Coll Med, Scott & White Mem Hosp, Dept Pharm, Temple, TX 76508 USA
[4] Texas A&M Univ, Syst HSC Coll Med, Scott & White Mem Hosp, Dept Anesthesiol, Temple, TX 76508 USA
[5] Univ Wurzburg, Outcomes ResTM Grp, Wurzburg, Germany
[6] Univ Wurzburg, Dept Anesthesiol, Wurzburg, Germany
[7] Univ Toronto, Dept Anesthesia, Toronto, ON, Canada
[8] Univ Pittsburgh, Sch Med, Dept Anesthesiol, Pittsburgh, PA 15261 USA
[9] Univ Pittsburgh, Sch Med, Dept Pediat, Pittsburgh, PA 15261 USA
[10] Univ Kansas, Med Ctr, Dept Anesthesiol, Kansas City, KS 66103 USA
[11] Harvard Univ, Sch Med, Dept Anesthesia, Boston, MA 02115 USA
[12] Univ Louisville, Outcomes ResTM Inst, Louisville, KY 40292 USA
[13] Univ Louisville, Dept Anesthesiol, Louisville, KY 40292 USA
[14] Univ Louisville, Dept Pharmacol, Louisville, KY 40292 USA
[15] Duke Univ, Nurse Anesthetist Program, Durham, NC 27706 USA
[16] Hop Cantonal Univ Geneva, Div Anesthesiol, CH-1211 Geneva, Switzerland
[17] Childrens Hosp Philadelphia, Dept Anesthesia, Philadelphia, PA 19104 USA