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Right-bottom: Kaplan-Meier pacemaker-free survival estimates curves in both sexes. aAVB\/sCD, advanced atrio-ventricular block or severe conduction disturbances; HR, hazard ratio; CI, confidence interval; y.o, years old; IHD, ischemic heart disease; LVEF, left ventricular ejection fraction; BBB, bundle branch block; LBBB, left bundle branch block; RBBB, right bundle branch block; LAFB, left anterior fascicular block<\/jats:p>","DOI":"10.3389\/fcvm.2022.838473","type":"journal-article","created":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T08:05:48Z","timestamp":1674461148000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":14,"title":["Sex-Related Differences in Patients With Unexplained Syncope and Bundle Branch Block: Lower Risk of AV Block and Lesser Need for Cardiac Pacing in 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