ORIGINAL CONTRIBUTIONS: COLON/SMALL BOWEL
1Division of Research, Kaiser Permanente, Northern California, Oakland, California, USA
2Division of Gastroenterology, University of California, San Francisco, San Francisco General Hospital Campus, San Francisco, California, USA
Correspondence: James E. Allison, MD, Division of Gastroenterology UCSF, San Francisco General Hospital Campus, 1001 Potrero Avenue, NH-3D, San Francisco, California 94110, USA. E-mail: [email protected]
Received 2 February 2010; accepted 25 March 2010