1. Diagnosis of old anterior myocardial infarction in emphysema with poor R wave progression in anterior chest leads. Issue 5 (May 1981) Authors: Hart, G J; Barrett, P A; Barnaby, P F; Clark, E H; Lyons, N R; Burke, J J Journal: Heart Issue: Volume 45:Issue 5(1981) Page Start: 522 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗