Cardiac Operations in Patients 90 Years of Age and Older Carlos Blanche, MD, Jack M Matloff, MD, Timothy A Denton, MD, Steven S Khan, MD, Michele A DeRobertis, RN, Sharon Nessim, DrPH, Aurelio Chaux, MD The Annals of Thoracic Surgery Volume 63, Issue 6, Pages 1685-1690 (June 1997) DOI: 10.1016/S0003-4975(97)00091-X
Fig. 1 Survival curve using Kaplan-Meier estimates for nonagenarians undergoing cardiac operations. The Annals of Thoracic Surgery 1997 63, 1685-1690DOI: (10.1016/S0003-4975(97)00091-X)