O'Loughlin Colm, Barkin Jamie S
Division of Gastroenterology, University of Miami, School of Medicine/Mount Sinai Medical Center, 4300 Alton Road, Miami Beach, FL 33140, USA.
Gastrointest Endosc Clin N Am. 2004 Jan;14(1):229-37. doi: 10.1016/j.giec.2003.10.021.