Davidson Nicholas O, El-Serag Hashem B
Division of Gastroenterology, Washington University School of Medicine, Saint Louis, Missouri.
Section of Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas.
Gastroenterology. 2017 Jan;152(1):7-11. doi: 10.1053/j.gastro.2016.11.025. Epub 2016 Nov 23.