Fischer Andreas, Richter-Schrag Hans-Jürgen
Interdisciplinary Endoscopy, Department of General and Visceral Surgery, Department of Medicine II, University Hospital Freiburg, Freiburg, Germany.
Endoscopy. 2015;47 Suppl 1 UCTN:E157-8. doi: 10.1055/s-0034-1391425. Epub 2015 Apr 21.