2.1 Search strategy:
A comprehensive literature search was conducted with PubMed and Embase
until September 5, 2023. The MedRxiv and SSNR preprint servers were also
filtered. We combined Medical Subject Headings (MeSH) terms and
keywords, and subsequent search terms were, (( [Coronavirus]
or [Covid-19] or [SARS-CoV-2] AND [New-onset atrial
fibrillation] or [Atrial Fibrillation] or [Arrythmias] or
[Outcomes])) . There were no language or geographic restrictions. We
manually searched the reference lists of the included studies and the
relevant literature for additional qualifying studies. After removing
duplicate citations, the eligibility of the remaining articles was
evaluated by looking at their titles and abstracts. The PRISMA flow
diagram is depicted in Figure 1.