Lown's unusual case of effort angina.
D000787:Angina Pectoris / Q000209:etiology* / Q000503:physiopathology; D003331:Coronary Vessels / Q000503:physiopathology*; D006706:Homeostasis; D006801:Humans; D008297:Male; D013035:Spasm / Q000209:etiology*; D014661:Vasoconstriction