Schellhammer Frank, Meyer Martin, Oette Mark
1 Department of Radiology, Krankenhaus der Augustinerinnen, Köln, Germany.
2 Department of Gastroenterology, Krankenhaus der Augustinerinnen, Köln, Germany.
Vasa. 2016;45(3):253-4. doi: 10.1024/0301-1526/a000533.