Markowitz J E, Liacouras C A
Division of Gastroenterology and Nutrition, Children's Hospital of Philadelphia, 34th and Civic Center Boulevard, Philadelphia, PA 19104, USA.
Dig Liver Dis. 2006 Apr;38(4):251-3. doi: 10.1016/j.dld.2005.12.002. Epub 2006 Feb 7.