Affiliation: | (1) Department of Gastroenteroloyg, Hepatology, and Nutrition, M.D. Anderson Cancer Center, 1515 Holcombe Blvd., Box 0436, Houston, TX 77030, USA;(2) Department of Gastroenterology, University of Texas Southwestern Medical School, Dallas, TX, USA;(3) Department of Gastrointestinal Surgical Oncology, MD Anderson Cancer Center, Houston, TX, USA;(4) Department of Biostatistics and Mathematical Science, MD Anderson Cancer Center, Houston, TX, USA |