Affiliation
Gastroenterology, University of California San Francisco, San Francisco, California; Gastroenterology, University of California San Diego, San Diego, California. Electronic address: v1ajmera@ucsd.edu.; Epidemiology, Johns Hopkins, Baltimore, Maryland.; Epidemiology, Johns Hopkins, Baltimore, Maryland.; Pathology, University of California San Francisco, San Francisco, California.; Gastroenterology, University of California San Diego, San Diego, California.; Pathology, National Cancer Institute, Bethesda, Maryland.; Division of Gastroenterology and Hepatology, Saint Louis University, St. Louis, Missouri.; Gastroenterology, University of California San Francisco, San Francisco, California.