Expression microarray analysis of papillary thyroid carcinoma and benign thyroid tissue: emphasis on the follicular variant and potential markers of malignancy - Finn, S P; Smyth, P; Cahill, S; Streck, C; O’Regan, E M; Flavin, R; Sherlock, J; Howells, D; Henfrey, R; Cullen, M; Toner, M; Timon, C; O’Leary, J J; Sheils, O M (Virchows Arch, 2007)