[1] Univ Hosp, Dept Med Sci, Sect Endocrine Oncol, S-75185 Uppsala, Sweden
[2] Univ Hosp, Dept Clin Chem, S-75185 Uppsala, Sweden
[3] Univ Hosp, Dept Genet & Pathol, S-75185 Uppsala, Sweden
[4] St Olavs Univ Hosp, Dept Pathol, N-7006 Trondheim, Norway
[5] Ryhov Cty Hosp, Dept Clin Pathol & Cytol, S-55185 Jonkoping, Sweden
[6] St Olavs Univ Hosp, Dept Gastroenterol, N-7006 Trondheim, Norway