Steven Dale Boggs1,2, W David Sumrall3,4. 1. Professor and Chair, The Department of Anesthesiology, The University of Tennessee Health Science Center, Memphis, Tennessee. 2. Chief of Anesthesiology, Regional One Health, Memphis, Tennessee. 3. Associate Medical Director of Surgical Services, Medical Director of the OR, Jefferson HWY Campus, System Chair of the Department of Anesthesiology and Interventional Pain Medicine, Ochsner Health System, New Orleans, Louisiaina. 4. Associate Professor, University of Queensland, Brisbane, Australia.