Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 10(97), p. 2681-2682, 2002
DOI: 10.1111/j.1572-0241.2002.06058.x
Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 10(97), p. 2681-2682
DOI: 10.1016/s0002-9270(02)04416-7
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