MACIEJEWSKI, M.; PIESTRZENIEWICZ, K.; JASZEWSKI, R.; BIELECKA-DABROWA, A.; GOCH, J. H. Sources of Thromboembolism in Patients with Correctly Functioning Mechanical Valves: A Single-Center Transesophageal Echocardiographic Study. The Heart Surgery Forum, v. 14, n. 3, p. E149-E156, 15 Jun. 2011.