1. School of Nursing, University of Trieste, 34100 Trieste, Italy
2. Intensive Care Unit, University Hospital of Trieste, 34100 Trieste, Italy
3. Department of Anesthesia 1, University Hospital of Udine, 33100 Udine, Italy
4. Emilia-Romagna Regional Agency for Health and Social Care, 40100 Bologna, Italy