5Tung SY, Wu CS, Chen PC, et al. Clinical observation of Henoch-Schonlein purpura-focus on gastrointestinal manifestation and endoscopic findings. Chang Keng I Hsueh Tsa Chih, 1994,17:347-351.
6Esaki M, Matsumoto T, Nakamura S, et al. GI involvement in Henoch-Schonlein purpura. Gastrointest Endosc, 2002, 56: 920-923.
7Gunasekaran TS, Berman J, Gonzalez M. Duodenojejunitis: is it idiopathic or is it Henoch-Schonlein purpura without purpura. J Pediatr GastroenteroI Nutr, 2000, 30:22-28.