[1] Univ Penn Hlth Syst, Dept Anesthesiol & Crit Care, Philadelphia, PA 19107 USA
[2] Univ Calif San Francisco, Sch Med, Div Cardiol, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Div Hosp Med, San Francisco, CA 94143 USA
[4] Univ Nebraska Med Ctr, Coll Nursing, Lincoln, NE USA
[5] Harvard Univ, Sch Med, Cambridge, MA 02138 USA
[6] Brigham & Womens Hosp, Cardiovasc Fellowship Program, Boston, MA 02115 USA
[7] Baylor Coll Med, Winters Ctr Heart Failure Res, Houston, TX 77030 USA
[8] Michael E DeBakey VA Med Ctr, Cardiol Sect, Houston, TX USA
[9] Washington Univ, Sch Med Anesthesiol & Radiol, Div Cardiovasc, St Louis, MO 63130 USA
[10] Northwestern Univ, Feinberg Sch Med, Evanston, IL 60208 USA
[11] Mayo Clin, Div Cardiovasc Dis, Rochester, MN USA
[12] Johns Hopkins Univ, Sch Med, Baltimore, MD 21218 USA
[13] Univ New Mexico, Albuquerque, NM 87131 USA
[14] Spencer Meador Johnson, Pensacola, FL USA
[15] Duke Univ, Sch Med, Durham, NC 27706 USA
[16] Mayo Clin, Rochester, MN USA
[17] Mayo Clin, Qual Acad, Rochester, MN USA
[18] Univ Arkansas Med Sci, Little Rock, AR 72205 USA
[19] St Michaels Hosp, Li Ka Shing Knowledge Inst, Toronto, ON, Canada
[20] Toronto Gen Hosp, Toronto, ON, Canada
[21] Univ Toronto, Dept Anesthesia & Pain Management, Toronto, ON M5S 1A1, Canada