M Cheung1, T Seres2, J Cleveland3, N G Kounis4. 1. Department of Anesthesiology, University of Colorado Denver, Colorado, USA. Electronic address: melvina@stanfordalumni.org. 2. Department of Anesthesiology, University of Colorado Denver, Colorado, USA. Electronic address: Tamas.seres@ucdenver.edu. 3. Department of Surgery, Division of Cardiothoracic Surgery, University of Colorado Denver, Colorado, USA. Electronic address: Joseph.Cleveland@ucdenver.edu. 4. Department of Medical Sciences, Western Greece Highest Institute of Education and Technology, Patras, Greece. Electronic address: ngkounis@otenet.gr.