[1] Univ Washington, Dept Anesthesiol Pain Med & Neurol Surg, Neurocrit Care Serv, Seattle, WA 98195 USA
[2] Univ Washington, Dept Neurol Anesthesiol & Neurol Surg, Seattle, WA USA
[3] Univ Washington, Harborview Med Ctr, Dept Anesthesiol & Pain Med, Seattle, WA USA
[4] Turku Univ Hosp, Dept Anesthesiol Perioperat Serv Intens Care Med, Turku, Finland
[5] Univ Turku, Dept Anaesthesiol Intens Care Emergency Care & Pa, Turku, Finland
[6] Washington Univ, Dept Anesthesiol, St Louis, MO USA
[7] Univ Calif Davis, Dept Anesthesiol, Sacramento, CA USA
[8] Med Coll Wisconsin, Dept Anesthesiol, Milwaukee, WI USA
[9] Oregon Hlth & Sci Univ, Dept Anesthesiol, Portland, OR USA
[10] George Washington Univ, Dept Anesthesiol, Washington, DC USA