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Woloshynowych M, Oakley DA, Saunders BP, Williams CB.Woloshynowych M, et al. Among authors: saunders bp.Endoscopy. 1996 Nov;28(9):763-7. doi: 10.1055/s-2007-1005602.Endoscopy. 1996.PMID: 9007431Review.No abstract available.