Johnson J B, Marsden L, Samadder N J
Department of Medicine Gastroenterology, Huntsman Cancer Institute and University of Utah, Salt Lake City, Utah 84112, United States of America.
Endoscopy. 2013;45 Suppl 2 UCTN:E311-2. doi: 10.1055/s-0033-1344411. Epub 2013 Sep 5.