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…linical practice and guideline development.Methods and analysis The Cochrane Library, Web of Science, MEDLINE, Embase, China National Knowledge Infr…

…ases (China National Knowledge Infrastructure, Wanfang Data and SinoMed) from inception to 31 May 2026, supplemented by grey literature…

…es. A second search will identify relevant grey literature from Overton and Policy Commons databases. Sources will be managed using Ray…

…iews and Meta-Analyses 2020 and registered in PROSPERO. PubMed, MEDLINE and the Cochrane Library were searched through June 2024. Eligi…

…51389), and a search strategy was developed for MEDLINE (Ovid), Embase and PubMed (1 January 2015–19 February 2025). Prospective or re…

… by quitting smoking on diagnosis.We included articles found in MEDLINE and EMBASE until 2 January 2024. We conducted a random effects …

…f MEDLINE (1946 to March 2024), Embase (1974 to March 2024) and CENTRAL (searched 22 March 2024) was conducted. Risk of bias and a rand…

…nutritional outcomes and mortality in children in LMICs.Methods EMBASE, MEDLINE, Global Health, EconLit, Web of Science and six grey l…

…ases from their inception to 14 February 2026: PubMed, MEDLINE, Embase, the Cochrane Library, Web of Science, Chinese databases China …

…ed by a librarian in CINAHL (EBSCO), MEDLINE (EBSCO), PsycINFO (EBSCO) and Embase (Ovid) with no timeline or language restrictions. A…

… (via Ovid), Scopus, Web of Science, CINAHL, Embase (via Ovid), PubMed and Global Health (via Ovid) using predefined keywords. The ris…

…lated non-MV surgery in AF patients.Methods MEDLINE, Embase and Cochrane were searched. Outcomes of interest were: (1) postoperative AF …