Berger AK, Breall JA, Gersh BJ, Johnson AE, Oetgen WJ, Marciniak TA, Schulman KA. Effect of diabetes mellitus and insulin use on survival after acute myocardial infarction in the elderly (The Cooperative Cardiovascular Project). The American Journal of Cardiology. 2001 Feb;87(3):272–7. doi: 10.1016/s0002-9149(00)01357-6.