Walston, A The electrocardiographic manifestations of spontaneous left pneumothorax. [electronic resource] - Annals of internal medicine Mar 1974 - 375-9 p. digital Publication Type: Journal Article ISSN: 0003-4819 Standard No.: 10.7326/0003-4819-80-3-375 doi Subjects--Topical Terms: AgedArrhythmias, Cardiac--diagnosisDiagnosis, DifferentialDyspnea--diagnosisElectrocardiographyHeart Arrest--diagnosisHumansMaleMiddle AgedMyocardial Infarction--diagnosisPneumothorax--diagnosis