Bodnár Z, Várvölgyi C, Tóth J, Sápy P, Kakuk G
First Department of Medicine, Department of Radiology, Second Department of Surgery, University Medical School, Debrecen, Hungary.
Gastrointest Endosc. 2000 Dec;52(6):791-3. doi: 10.1067/mge.2000.109587.