1. Hospital Healthcare Management, Local Health Autority of Pescara, Via Renato Paolini, 65124 Pescara, Italy
2. Postgraduate School of Hygiene and Preventive Medicine, Università Politecnica delle Marche, 60100 Ancona, Italy
3. Postgraduate School of Hygiene and Preventive Medicine, University of L’Aquila, 67100 L’Aquila, Italy
4. School of Hygiene and Preventive Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy
5. Regional Health Care and Social Agency of Lodi, ASST Lodi, 26900 Lodi, Italy
6. Department of Medicine and Ageing Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
7. Unit of Hygiene, Epidemiology and Public Health, Local Health Authority of Pescara, 65100 Pescara, Italy