Chonchol M, Katz R, Fried LF, Sarnak MJ, Siscovick DS, Newman AB, Strotmeyer ES, Bertoni A, Shlipak MG. Glycosylated hemoglobin and the risk of death and cardiovascular mortality in the elderly. Nutr Metab Cardiovasc Dis. 2010  ;20(1):15-21.