Hait Elizabeth J, Fishman Laurie N, Katzka David A
Division of Gastroenterology and Nutrition, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA.
Clin Gastroenterol Hepatol. 2009 Jul;7(7):721-4. doi: 10.1016/j.cgh.2009.01.018. Epub 2009 Feb 4.