Search Strategy and Selection (move structure)
The methods and results of this review have been done in accordance to the Meta-analysis Of Observational Studies in Epidemiology and Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement (4, 5). The review protocol is previously registered on the International Prospective Register of Systematic Reviews (PROSPERO) with Centre of Reviews and Dissemination (CRD) report number of CRD42021243598. A number of medical databases were searched including PubMed, Ovid Medline, EMBASE, Web of Science, Cochrane Central Register of Controlled Trials (2005-2020), Scopus, Proquest, Science Direct and grey literature using both free-text terms and Medical Subject Heading (MeSH) terms for studies with English language and adult human studies that reported standardized TTE indices. The search terms and key search strategies are listed in Supplementary Materials 1. A grey literature search identified additional studies that were not identified in the initial search of the afore-mentioned medical databases. All diagnostic cohort and case-control studies that measured and compared echocardiographic parameters between myocarditis and adult control populations were included. Studies which were not able to provide sufficient data, those with pediatric populations or those that did not compare the study populations involved in the analysis hypothesis were excluded.