CRP and myocarditis: Among the four included studies, Qin 2020 showed a notably higher level of CRP among myocarditis patients (MD: 10.61; 95% CI: 10.01-11.21) compared to the other studies since this study included patients suffering from viral myocarditis whereas the other studies centered on infective or lymphocytic myocarditis (Table 1, Figure 3) [36-39].