Emdin, M Improved exercise capacity with acute aminophylline administration in patients with syndrome X. [electronic resource] - Journal of the American College of Cardiology Nov 1989 - 1450-3 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0735-1097 Standard No.: 10.1016/0735-1097(89)90380-x doi Subjects--Topical Terms: AdultAminophylline--therapeutic useAngina Pectoris--drug therapyDouble-Blind MethodExerciseExercise TestFemaleHumansMiddle AgedRandom AllocationSyndrome