1. Regional palliative care program, SAMO, Palermo, Italy;
2. Department of Biotechnological and Applied Clinical Sciences, Section of Clinical Epidemiology and Environmental Medicine, University of L’Aquila, Italy;
3. Palliative Care Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, FC, Italy;
4. Palliative Care Unit, Casale Monferrato, ASL Alessandria, Italy;
5. Palliative Care Unit, AUSL Della Romagna, Ravenna, Italy;
6. Palliative Care and Hospice Unit, AUSL Romagna, Cesena, Italy;
7. Palliative Care, Oncology Department, Guglielmo da Saliceto Hospital, Piacenza, Italy;
8. ”Casa Margherita” Hospice, ASL 01 Avezzano-Sulmona-L’Aquila, L’Aquila, Italy;
9. Anesthesiology and Pain Medicine, Department of Life Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy