Thiazolidinediones, metformin, and outcomes in older patients with diabetes and heart failure: an observational study.
Masoudi FA, Inzucchi SE, Wang Y, Havranek EP, Foody JM, Krumholz HM. Thiazolidinediones, metformin, and outcomes in older patients with diabetes and heart failure: an observational study. Circulation. 2005 Feb 08; 111(5):583-90.