Dumoulin Franz Ludwig, Will Christian-Heinrich, Schlief Hans-Eugen
Department of Medicine II, Gastroenterology and Oncology, St-Agnes-Hospital Bocholt, Bocholt, Germany.
Clin Gastroenterol Hepatol. 2006 Oct;4(10):xxvi. doi: 10.1016/j.cgh.2006.02.015. Epub 2006 May 11.