1. Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Wien, Austria
2. Department for Internal Medicine, Red Cross Hospital Bremen, Germany
3. Interdisciplinary Centre of Ultrasound Diagnostics, Gastroenterology, Endocrinology, Metabolism and Clinical Infectiology, University Hospital of Gießen and Marburg Campus Marburg, Germany
4. Department for Internal Medicine, West Mecklenburg Hospital Helene von Bülow, Ludwigslust, Germany