Clinical and molecular features of the hereditary mixed polyposis syndrome. by Whitelaw, S, Murday, V, Tomlinson, I, Thomas, H, Cottrell, S, Ginsberg, A, Bukofzer, S, Hodgson, S, Skudowitz, R, Jass, JR, Talbot, I, Northover, J, Bodmer, W, Solomon, E