@misc{indiciaec1bfcc68677c, title = {Comparison of electrocardiographic and left ventricular functional changes during exercise.}, author = {G E Newman and S K Rerych and M T Upton and D C Sabiston and R H Jones}, year = {1980}, doi = {10.1161/01.cir.62.6.1204}, url = {https://pubmed.ncbi.nlm.nih.gov/7438356/}, note = {Source identifier: 7438356} }