R. Silva, L. Puga, R. Teixeira, A. Botelho, C. Lourenço, and L. Gonçalves, “Acute Non-Rheumatic Myopericarditis: A Rare Complication of Pharyngitis”, EJCRIM, vol. 5, no. 12, Nov. 2018, doi: 10.12890/2018_000987.