Structural Integrity and Cellular Viability of Cryopreserved Allograft Heart Valves in Right Ventricular Outflow Tract Reconstruction: Correlation of Histopathological Changes with Donor Characteristics and Preservation Times. - Fabian O; Havova M; Gebauer R; Poruban R; Spatenka J; Burkert J; Rohn V; Chaloupecky V; Komarek A; Kala T; Janousek J (Brazilian journal of cardiovascular surgery, 2022)