1. Department of Anesthesia and Intensive Care Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
2. First Department of Anesthesia and Intensive Care Medicine, Fundeni Clinical Institute, Bucharest, Romania
3. Department of Cardiac Anesthesia and Intensive Care II, Emergency Institute for Cardiovascular Diseases ‘Prof. Dr C. C. Iliescu’, Bucharest, Romania
4. Department of Surgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania