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 (Polish Journal of Thoracic & Cardiovascular Surgery / Kardiochirurgia i Torakochirurgia Polska, 2025)