TY - RPRT TI - Exercise capacity in patients with severe left ventricular dysfunction. AU - W Benge AU - R L Litchfield AU - M L Marcus PY - 1980 DO - 10.1161/01.cir.61.5.955 UR - https://pubmed.ncbi.nlm.nih.gov/6444854/ ID - 6444854 ER -