Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 10(96), p. 2839-2848, 2001
DOI: 10.1111/j.1572-0241.2001.04236.x
Lippincott, Williams & Wilkins, The American Journal of Gastroenterology, 10(96), p. 2839-2848
DOI: 10.1016/s0002-9270(01)02798-8
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