Melin, J., Konstam, M. A., Rousseau, M., & Pouleur, H. (1993). Progression of left ventricular dysfunction in patients with heart failure. SOLVD Investigators. The Studies of Left Ventricular Dysfunction. Annali Italiani di Medicina Interna, 8 Suppl, 9S. https://hdl.handle.net/2078.5/50126 (Original work published 1993)