Northup Patrick G, Caldwell Stephen H
Division of Gastroenterology and Hepatology, University of Virginia, JPA and Lee Street, MSB 2142, P.O. Box 800708, Charlottesville, VA 22908-0708, USA.
Intern Emerg Med. 2010 Feb;5(1):3-6. doi: 10.1007/s11739-009-0345-1.