1. Convalescent Care Geriatric Unit, Centre Assistencial Prytanis , Sant Boi de Llobregat (Barcelona), Spain
2. Fundación Caredoctors Research Unit, , Barcelona, Spain
3. Universitat Internacional de Catalunya School of Medicine and Health Sciences, , Sant Cugat del Valles (Barcelona), Spain
4. Hospital San Juan de Dios Department of Internal Medicine, , Seville, Spain
5. Universitat Autònoma de Barcelona Escoles Universitàries Gimbernat, , Sant Cugat del Vallès (Barcelona), Spain
6. Universitat Internacional de Catalunya Department of Basic Sciences, School of Medicine and Health Sciences, , Barcelona, Spain