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Fennerty MB, Lieberman DA, Vakil N, Magaret N, Faigel DO, Helfand M.Fennerty MB, et al. Among authors: lieberman da.Arch Intern Med. 1999 Jul 26;159(14):1562-6. doi: 10.1001/archinte.159.14.1562.Arch Intern Med. 1999.PMID: 10421278
Lieberman DA, De Garmo PL, Fleischer DE, Eisen GM, Helfand M.Lieberman DA, et al.Gastroenterology. 2000 Mar;118(3):619-24. doi: 10.1016/s0016-5085(00)70269-1.Gastroenterology. 2000.PMID: 10702214
Lieberman DA, de Garmo PL, Fleischer DE, Eisen GM, Chan BK, Helfand M.Lieberman DA, et al.Gastrointest Endosc. 2000 Jun;51(6):647-51. doi: 10.1067/mge.2000.105082.Gastrointest Endosc. 2000.PMID: 10840294