Reale, A [Changes in the electrocardiographic tracing induced by the artificial synchronized demand pacemaker]. [electronic resource] - Atti della Societa italiana di cardiologia 1968 - 157-8 p. digital Publication Type: Journal Article ISSN: 0081-069X Subjects--Topical Terms: ElectrocardiographyHeart Block--surgeryHumansPacemaker, Artificial