Brunelli, C Variable threshold of exertional angina: a clue to a vasospastic component. [electronic resource] - European heart journal Apr 1981 - 155-61 p. digital Publication Type: Case Reports; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0195-668X Standard No.: 10.1093/oxfordjournals.eurheartj.a061176 doi Subjects--Topical Terms: Angina Pectoris--physiopathologyCoronary AngiographyCoronary Vessels--physiopathologyElectrocardiographyHumansMaleMiddle AgedPhysical Exertion