Molecular pathology shows p16 methylation in nonadenomatous pituitaries from patients with Cushing's disease. - Simpson,D.J.; McNicol,A.M.; Murray,D.C.; Bahar,A.; Turner,H.E.; Wass,J.A.; Esiri,M.M.; Clayton,R.N.; Farrell,W.E. (Clin Cancer Res, 2004)