[1] Uppsala Univ, Ctr Clin Res Vastmanland, Vasteras, Sweden
[2] Uppsala Univ, Dept Med Sci Clin Diabetol & Metab, Uppsala, Sweden
[3] Dalarna Univ, Sch Educ Hlth & Social Studies, Falun, Sweden
[4] Sahlgrens Univ Hosp, Dept Med, Gothenburg, Sweden
[5] Orebro Univ, Univ Hlth Care Res Ctr, Sch Med Sci, Orebro, Sweden
[6] Uppsala Univ, Ctr Clin Res Dalarna, Falun, Sweden
[7] Uppsala Univ, Dept Publ Hlth & Caring Sci, Family Med & Prevent Med Sect, Uppsala, Sweden
[8] Sormland Cty Council, Drug & Therapeut Comm, Eskilstuna, Sweden
[9] Uppsala Univ, Ctr Clin Res Sormland, Eskilstuna, Sweden
[10] Natl Diabet Register, Ctr Registers, Gothenburg, Sweden