[1] Tampere Univ, Fac Social Sci Hlth Sci, Arvo Ylpon Katu 34, Tampere 33014, Finland
[2] Tampere Univ, Gerontol Res Ctr GEREC, Tampere, Finland
[3] Finnish Inst Hlth & Welf, Dept Publ Hlth & Welf, Populat Hlth Unit, Helsinki, Finland
[4] Karolinska Inst, Ctr Alzheimer Res, Dept Neurobiol Care Sci & Soc, Div Clin Geriatr, Stockholm, Sweden
[5] Univ Eastern Finland, Inst Clin Med Neurol, Kuopio, Finland
[6] Southern Ostrobothnia Cent Hosp, Seinajoki, Finland
[7] Harma Rehabil Ctr, Yliharma, Finland
[8] South Ostrobothnia Memory Assoc, Yliharma, Finland
[9] City Seinajoki, Seinajoki, Finland
[10] Univ Cambridge, Dept Psychol, Cambridge, England
[11] Univ Eastern Finland, Inst Publ Hlth & Clin Nutr, Kuopio, Finland
[12] Joint Municipal Author North Karelia Social & Hlt, Joensuu, Finland
[13] Imperial Coll London, Sch Publ Hlth, Neuroepidemiol & Ageing Res Unit, London, England
[14] Karolinska Univ Hosp, Theme Aging, Stockholm, Sweden
[15] Stockholms Sjukhem, Res & Dev Unit, Stockholm, Sweden