[1] HES SO Valais Wallis, Sch Hlth Sci, 5 Chemin Agasse, CH-1950 Sion, Switzerland
[2] Univ Porto, Inst Biomed Sci Abel Salazar, Porto, Portugal
[3] Univ Lausanne, Res Ctr Psychol Hlth Aging & Sport Examinat, Lausanne, Switzerland
[4] Hosp & Univ Lausanne, Educ & Res Dept, Psychiat Lib, Lausanne, Switzerland
[5] Higher Sch Nursing Porto, Porto, Portugal
[6] Lausanne Univ Hosp, Serv Old Age Psychiat, Lausanne, Switzerland