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Mayo Clinic
TUM Klinikum
Endoscopy | October 25, 2013 | Volume: 45 | Issue: 12 | Pages: 1006-1013
10.1055/s-0033-1344714
Endoscopy | October 4, 2011 | Volume: 43 | Issue: 12 | Pages: 1076-1081
10.1055/s-0030-1256767
Endoscopy | August 4, 2011 | Volume: 43 | Issue: 10 | Pages: 882-891
10.1055/s-0030-1256632