[1] Phillips Univ Marburg, Inst Pathol, Marburg, Germany
[2] Univ Hosp Marburg, Marburg, Germany
[3] Christian Albrechts Univ Kiel, Univ Hosp Schleswig Holstein, Dept Pathol, Campus Kiel, Kiel, Germany
[4] Tech Univ Munich, Inst Pathol, Munich, Germany
[5] Univ Hosp Mainz, Inst Pathol, Mainz, Germany
[6] Phillips Univ Marburg, Dept Surg, Marburg, Germany
[7] Phillips Univ Marburg, Dept Gastroenterol Endocrinol & Infect Dis, Marburg, Germany