1. Department of Biomedicine and Prevention, Biomedicine and Prevention Department, University of Rome ‘Tor Vergata’ , via Montpellier 1, 00133, Rome , Italy
2. Department of Social Research and Sociological Methodology (Ri.S.Me.S.), University of Rome ‘La Sapienza’ , C.so Italia 38A, 00198 Rome , Italy
3. Predeparmental Nursing Unit, University of La Rioja , Calle Duquesa de la Victoria 88, 26004, 10 Logroño , Spain