Gedeborg , R.; Holm , L.; Feltelius , N.; Sundström , A.; Eggers , K. M.; Nurminen , M.-L.; Grünewald , M.; Pihlström , N.; Zethelius , B.; Ljung , R. Validation of Myocarditis Diagnoses in the Swedish Patient Register for Analyses of Potential Adverse Reactions to COVID-19 Vaccines. ujms 2023, 128.