[1] Univ Gothenburg, Sahlgrenska Acad, Dept Med, Skovde, Sweden
[2] Uppsala Univ, Dept Publ Hlth & Caring Sci Family Med & Clin Epi, Skovde, Sweden
[3] Uppsala Univ, Dept Publ Hlth & Caring Sci Geriatr, Skovde, Sweden
[4] Karnsjukhuset, Dept Nephrol, Skovde, Sweden