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- National institutes of health workshop on endoscopic research priorities : Bethesda, Maryland, December 12-13, 1998 / edit. David Lieberman . 1999. Vol. 49, No. 3, Part 2, Suppl. - St. Louis : Mosby , 1999 - 4, 104 s. (Gastrointestinal Endoscopy; Suppl.) [1, currently available 0, at library only 1]
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