Author(s) affiliations:Robert A. Ritzel1, Berend Isermann1, Tobias Schilling1, Hanns-Peter Knaebel2, Markus W. Büchler2, Peter P. Nawroth1
1Department of Medicine I, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
2Department of General Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany.