[1] St Vincents Univ Hosp, Dept Nucl Med, Dublin 4, Ireland
[2] Univ Coll Dublin, Dept Surg, Conway Inst Biomol & Biomed Res, Dublin 4, Ireland
[3] Inst Tumor Marker Oncol, NL-2801 TG Gouda, Netherlands
[4] Univ Helsinki, Cent Hosp, Dept Surg, Helsinki, Finland
[5] Akad Hosp, Dept Clin Chem & Pharmacol, Uppsala, Sweden
[6] Ctr Clin & Expt Tumour Diag & Therapy, Hamburg, Germany
[7] Univ Munich, Klinikum Grosshadern, Med Klin 2, D-8000 Munich, Germany
[8] CanAg Diagnost, Gothenburg, Sweden
[9] Royal Edinburgh Infirm, Dept Clin Biochem, Edinburgh, Midlothian, Scotland
[10] Univ Hosp, Dept Internal Med 2, Plzen, Czech Republic