title: [Periodic sino-atrial block. Apropos of 2 cases].
mesh_terms: D000368:Aged; D001146:Arrhythmia, Sinus / Q000175:diagnosis / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012849:Sinoatrial Node / Q000503:physiopathology; D013997:Time Factors
vernacular_title: Il blocco seno-atriale periodico. Considerazioni a proposito di due casi.