Molecular and phenotypic markers of hamartomatous polyposis syndromes in the gastrointestinal tract. - Entius,M.M.; Westerman,A.M.; van Velthuysen,M.L.; Wilson,J.H.; Hamilton,S.R.; Giardiello,F.M.; Offerhaus,G.J. (Hepatogastroenterology, 1999)