L'Abbate, A [Treatment of unstable angina with oral verapamil. Cross-over double-blind study]. [electronic resource] - Bollettino della Societa italiana di cardiologia 1978 - 131-4 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0037-878X Subjects--Topical Terms: AdultAgedAngina Pectoris--drug therapyClinical Trials as TopicDouble-Blind MethodHumansMiddle AgedPlacebosVerapamil--therapeutic use