1 Division of Gastroenterology and Hepatology, Department of Medicine, Medical University of Graz, Graz, Austria. Electronic address: peter.fickert@medunigraz.at.
2 Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria.
3 Institute of Radiology Technology, FH Joanneum University of Applied Sciences, Graz, Austria.
4 Department of Pathology, Medical University of Graz, Graz, Austria.