Jamal Hasoon1, Mark Burroughs2, Ivan Urits3, Vwaire Orhurhu3, Omar Viswanath4, Alan D Kaye5. 1. Department of Anesthesiology, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA. 2. Department of General Surgery, Methodist Dallas Medical Center, Dallas, TX. 3. Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA. 4. Valley Anesthesiology and Pain Consultants, Phoenix, AZ; Department of Anesthesiology, University of Arizona College of Medicine-Phoenix, Phoenix, AZ; Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE. 5. LSU Health Science Center, New Orleans.