Department of Gastroenterology;
Rabin Medical Center;
Tel Aviv University;
Petah Tikva 49100;
Israel;
Department of Pathology;
Rabin Medical Center;
Hasharon Hospital;
Petah Tikva 49100;
Israel;
Department of Pathology;
Rabin Medical Center;
Beilinson Hospital;
Petah Tikva 49100;
Israel;
Department of Medicine;
University of California;
and VA San Diego Healthcare System;
San Diego;
CA 92161;
United States;