pubmed:affiliation |
Greater Los Angeles Veterans Administration Healthcare System, Department of Medicine, Division of Gastroenterology, UCLA School of Medicine, Los Angeles, CA 90073, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't,
Multicenter Study
|