pubmed:affiliation |
Houston Center for Quality of Care and Utilization Studies, and Deparment of Gastroenterology, Michael E. DeBakey VAMC and Baylor College of Medicine, Houston, TX 77030, USA. nabraham@bcm.tmc.edu
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't,
Meta-Analysis,
Research Support, N.I.H., Extramural
|