[1] Uppsala Univ, Uppsala Clin Res Ctr, Uppsala, Sweden
[2] Karolinska Inst, ARC, Stockholm, Sweden
[3] Malmo Univ Hosp, Malmo, Sweden
[4] Umea Univ Hosp, Dept Nursing, S-90185 Umea, Sweden
[5] Karolinska Inst, Bergsjo Vardcent, Stockholm, Sweden
[6] Linkoping Univ Hosp, Dept Geriatr, S-58185 Linkoping, Sweden
[7] Umea Univ Hosp, Dept Geriatr, S-90185 Umea, Sweden