1. Department of Anesthesiology and Perioperative Medicine, MD Anderson Cancer Center, University of Texas, TX, USA
2. Department of Anesthesiology, Universidad del Valle, Cali, Colombia
3. Department of Anesthesia and Critical Care, Infanta Leonor University Hospital, Spain
4. Department of Anesthesiology, Hospital Universitario Río Hortega, Spain
5. Department of Anesthesia, Hospital Juan Ramon Jimenez, Spain
6. Department of Surgery, Department of General Surgery, Hospital Clínico Universitario Lozano Blesa, Spain
7. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Hospital, MD, USA