2.1 Data sources and searches
This systematic review and meta-analysis were carried out following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement.20 Searches were independently performed by two investigators (G.Y. and T.K.) who searched Embase, Medline (PubMed), and Cochrane’s Library databases for related articles, with the keywords: “left bundle branch pacing” OR “left bundle branch area pacing.” At the same time, references of the relevant original and review articles were manually sorted to undergo a comprehensive search. The search was restricted to research in humans published in English, and was completed on July 17, 2022.