1. Iuliu Hațieganu University of Medicine and Pharmacy, 1 st Department of Anaesthesia and Intensive Care, Cluj-Napoca, Romania
2. Department of Anaesthesiology and Intensive Care, Gr. T. Popa University of Medicine and Pharmacy, Iași, Romania
3. Department of Intensive Care, University of Medicine and Pharmacy, Târgu-Mureș, Romania
4. Department of Anaesthesiology and Intensive Care, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
5. Outcome Research Consortium, Cleveland, Ohio, United States of America