[1] Linnaeus Univ, Dept Hlth & Caring Sci, SE-39182 Kalmar, Sweden
[2] Swedish Family Care Competence Ctr, Stromgatan 13, SE-39232 Kalmar, Sweden
[3] Vanderbilt Univ, Sch Nursing, Sch Nursing 179,461 21st Ave South, Nashville, TN 37240 USA
[4] Univ Sussex, Sch Psychol, Brighton BN1 9QQ, East Sussex, England
[5] Univ Ljubljana, Fac Social Sci, Ljubljana 1000, Slovenia
[6] IRCCS, Ctr Socio Econ Res Ageing, INRCA Natl Inst Hlth & Sci Ageing, I-60124 Ancona, Italy
[7] Netherlands Inst Social Res SCP, Postbus 16164, NL-2500 BD The Hague, Netherlands
[8] Univ Basel, Inst Biomed Eth, Sci & Med Fac, CH-4001 Basel, Switzerland
[9] Manchester Metropolitan Univ, Fac Hlth & Educ, Manchester M15 6BX, England