Affiliation: | (1) Department of Internal Medicine, Division of Gastroenterology, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555-0655, USA;(2) Department of Anesthesiology, Resuscitation Research Laboratory, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555-1102, USA; |