Michelakakis, N A Comparison of endothelin-1 levels at rest and during exercise between patients with cardiac syndrome-X and healthy people. [electronic resource] - Acta cardiologica 1998 - 3-6 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0001-5385 Subjects--Topical Terms: AdultEndothelin-1--bloodExercise TestFemaleHumansMaleMicrovascular Angina--bloodMiddle AgedRadioimmunoassayRest