[1] Tech Univ Munich, Klin & Poliklin Innere Med 2, Klinikum Rechts Isar, Ismaninger Str 22, D-81675 Munich, Germany
[2] Klinikum Augsburg, Med Klin 3, Stenglinstr 2, D-86156 Augsburg, Germany
[3] Univ Klinikum Munster, Med Klin B, Albert Schweitzer Campus 1, D-48149 Munster, Germany