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Brown SR, Ballan K, Ho E, Ho Fams YH, Seow-Choen F.Brown SR, et al.Colorectal Dis. 2001 May;3(3):175-8. doi: 10.1046/j.1463-1318.2001.00224.x.Colorectal Dis. 2001.PMID: 12790985Clinical Trial.