Erikson , Uno, Adar Hallén, Gunnar Helmius, S.-O. Nyström, and Gunnar Ruhn. “Coronary By-Pass Operation—Graft and Left Ventricular Function”. Upsala Journal of Medical Sciences 85, no. 1 (March 1, 1980): 84-93. Accessed March 27, 2026. https://ujms.net/index.php/ujms/article/view/7195.