1. Institute of Radiology, University Medical Centre Ljubljana, Zaloška cesta 7, 1525 Ljubljana, Slovenia
2. Department of Ginecology, University Medical Centre Ljubljana, Zaloška cesta 7, 1525 Ljubljana, Slovenia
3. Department of Gastroenterology and Endoscopy, University Medical Centre Maribor, University of Maribor, Ljubljanska Ulica 5, 2000 Maribor and Medical Faculty, Slomškov trg 15, 2000 Maribor, Slovenia