Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 5(95), p. 1371-1373, 2000
DOI: 10.1016/s0002-9270(00)00839-x
Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 5(95), p. 1371-1373, 2000
DOI: 10.1111/j.1572-0241.2000.02047.x
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