MLH1 and colonic neoplasm: 9 Grady Grady WM WM ,  Rajput Rajput A A ,  Lutterbaugh Lutterbaugh JD JD ,  Markowitz Markowitz SD SD  ( 2001 2001 )  Detection of aberrantly methylated hMLH1 promoter DNA in the serum of patients with microsatellite unstable colon cancer Detection of aberrantly methylated hMLH1 promoter DNA in the serum of patients with microsatellite unstable colon cancer .