[1] Univ Virginia Hlth Syst, Charlottesville, VA USA
[2] Univ Toronto, St Michaels Hosp, Toronto, ON, Canada
[3] Univ Iowa, Iowa City, IA USA
[4] Univ Wisconsin, Med Ctr, Madison, WI 53706 USA
[5] Cleveland Clin, Cleveland, OH 44106 USA
[6] Univ Washington, Med Ctr, Seattle, WA 98195 USA
[7] Centura St Anthony Hosp, Lakewood, CO USA
[8] Univ Calif San Francisco, San Francisco, CA 94143 USA
[9] Duke Univ Hosp, Durham, NC USA
[10] UT Southwestern Med Ctr, Dallas, TX USA
[11] Univ Calif Los Angeles, Med Ctr, Los Angeles, CA 90024 USA
[12] IRCCS Policlin San Donato, Milan, Italy
[13] Swedish Med Ctr, Seattle, WA USA
[14] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
[15] Abbott NW Hosp, Minneapolis, MN 55407 USA
[16] Mayo Clin, Rochester, MN USA
[17] Baylor Coll Med, Houston, TX 77030 USA
[18] Univ Penn, Med Ctr, Philadelphia, PA 19104 USA
[19] Univ Colorado, Denver, CO 80202 USA
[20] Mayo Clin, Phoenix, AZ USA
[21] Weill Cornell Med Ctr, New York, NY USA
[22] Loyola Univ, Med Ctr, 2160 S 1st Ave, Maywood, IL 60153 USA
[23] Case Western Univ, Med Ctr, Cleveland, OH USA
[24] Missoula Anesthesiol, Missoula, MT USA
[25] Northshore Univ Hosp, Zucker Sch Med Hofstra Northwell, Manhasset, NY USA
[26] Johns Hopkins Med Ctr, Baltimore, MD USA
[27] Univ S Florida, Morsani Coll Med, Lehigh Valley Hlth Network, Tampa, FL USA
[28] AAA Anesthesia Associates, Phymed Healthcare Grp, Allentown, PA USA
[29] Pacific Anesthesia, Honolulu, HI USA