About the Authors
Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
Division of Gastroenterology, Tufts New England Medical Center, Boston, Massachusetts, United States of America
Department of Pathology, Baylor College of Medicine, Houston, Texas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: PR DJT JW. Performed the experiments: PR AG KTE BF JAS. Analyzed the data: PR DJT. Contributed reagents/materials/analysis tools: JAS JCG. Wrote the paper: PR DJT.