Proportion and phenotype of MYH-associated colorectal neoplasia in a population-based series of Finnish colorectal cancer patients. by Enholm, S, Hienonen, T, Suomalainen, A, Lipton, L, Tomlinson, I, Kärjä, V, Eskelinen, M, Mecklin, J, Karhu, A, Järvinen, H, Aaltonen, L