[1] Massachusetts Gen Hosp, Dept Anesthesia Crit Care & Pain Med, Boston, MA 02114 USA
[2] Univ Fed Santa Catarina, Florianopolis, SC, Brazil
[3] Univ Colorado, Sch Med, Dept Anesthesiol, Aurora, CO USA
[4] Harvard Med Sch, Brigham & Womens Hosp, Dept Anesthesiol Perioperat & Pain Med, Boston, MA USA
[5] Northwestern Univ, Dept Anesthesiol, Chicago, IL USA
[6] Mayo Clin, Dept Anesthesiol, Rochester, MI USA
[7] Beth Israel Deaconess Med Ctr, Dept Anesthesiol, Boston, MA 02215 USA
[8] NCH Healthcare Syst, Dept Anesthesiol, Miami, FL USA
[9] Univ Nebraska, Dept Anesthesiol, Med Ctr, Omaha, NE USA
[10] Univ Miami, Dept Anesthesiol, Hosp & Clin, Miami, FL 33136 USA
[11] Univ Calif San Francisco, Dept Neurol, San Francisco, CA USA
[12] Massachusetts Gen Hosp, Anesthesia Res Ctr, Dept Anesthesiol, Boston, MA USA
[13] Columbia Univ, Irving Med Ctr, Dept Anesthesiol, New York, NY 10032 USA