1. King Faisal Specialist Hospital & Research Center, Organ Transplant Center of Excellence, Riyadh 11564, Saudi Arabia
2. Department of Anesthesia and Intensive Care Medicine III, Fundeni Clinical Institute, 022328 Bucharest, Romania
3. Anesthesia and Intensive Care Department, University of Medicine and Pharmacy “Carol Davila”, 050474 Bucharest, Romania
4. Penn Anesthesiology and Critical Care HUP, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA