The role of mediastinal blood in the development of postoperative atrial fibrillation after cardiac surgery - Vlahou, Athanasia; Ampatzidou, Fotini; Koulaouzidis, George; Drosos, Odysseas; Antonopoulos, Nikolaos; Drosos, George (Kardiochirurgia i Torakochirurgia Polska/Polish Journal of Thoracic and Cardiovascular Surgery, 2025)