[1] Gen Hosp Linz, Ctr Hematol & Med Oncol, Dept Internal Med 3, A-4020 Linz, Austria
[2] Salzburg Univ, Dept Med, A-5020 Salzburg, Austria
[3] LKH, Dept Med, Feldkirch, Austria
[4] Univ Vienna, Internal Dept 1, Vienna, Austria
[5] Kh Elisabethinen, Dept Internal Med 1, Linz, Austria
[6] LKH, Dept Med, Klagenfurt, Austria
[7] Kh Bh Schwestern, Dept Med 1, Linz, Austria
[8] Dept Med Kh, Linz, Austria
[9] Univ Vienna, Dept Pathol, Vienna, Austria
[10] TILAK, Inst Clin Epidemiol, Innsbruck, Austria