[1] Univ Gothenburg, Sahlgrenska Acad, Inst Med, S-41345 Gothenburg, Sweden
[2] Huddinge Univ Hosp, Karolinska Inst,Metab Unit, Novum,Ctr Metab & Endocrinol, Dept Med & Mol Nutr Unit,Ctr Nutr & Toxicol, S-14186 Huddinge, Sweden
[3] Skaraborg Hosp, Dept Internal Med, Skovde, Sweden