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Villeneuve JP, Desrochers M, Infante-Rivard C, Willems B, Raymond G, Bourcier M, Côté J, Richer G.Villeneuve JP, et al.Gastroenterology. 1994 Apr;106(4):1000-5. doi: 10.1016/0016-5085(94)90760-9.Gastroenterology. 1994.PMID: 8143967