[1] Hosp Special Surg, Dept Anesthesiol Crit Care & Pain Management, New York, NY USA
[2] Univ Rochester, Dept Anesthesiol & Perioperat Med, Rochester, NY USA
[3] Univ Washington, Dept Anesthesiol & Pain Med, Seattle, WA USA
[4] Univ Kiel, Dept Neurol, Kiel, Germany
[5] Harvard Med Sch, Dept Anesthesiol Perioperat & Pain Med, Boston, MA USA
[6] Queens Univ, Dept Anesthesiol & Perioperat Med, Kingston, ON, Canada
[7] Univ Witwatersrand, Sch Psychol, Johannesburg, South Africa
[8] Tufts Univ, Dept Anesthesiol, Boston, MA USA
[9] Imperial Coll London, Dept Surg & Canc, London, England