HISTOLOGICAL STRUCTURE OF THE ATRIAL APPENDAGES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION AFTER CARDIAC SURGERY ArticleGioeva Z., Gutyrchik N., Kakturskij L., Stonogin A., Solovieva S., Savina V., Tikhonova N., Mikhaleva L.Virchows Archiv-European Journal of Pathology. Том 487. 2025. С. S236-S237