1 Department of Medicine, Marienhausklinik St. Josef Kohlhof, Neunkirchen, Germany; Department of Medicine II, Saarland University Medical Center, Saarland University, Homburg, Germany. Electronic address: vincent.zimmer@gmx.de.
2 Insitute of Pathology Saarbrücken-Rastpfuhl, Saarbrücken, Germany.