Limitations
The results of this study should be interpreted with some caution as it
is based on retrospective observational data from a single academic
center. Another limitation is the overall low number of patients with
TCM. Although viral genomes were found in a few patients with TCM but
with no signs of viral myocarditis, we cannot entirely exclude a
pathological role (including atrial myocarditis) of the detected viruses
in these patients.