Gialafos E, Rapti A, Kouranos V, Aggeli K, Papaioannou TG, Kallianos A, Siasos G, Kostopoulos C, Stefanadis C. Detection of right ventricular dysfunction by tissue Doppler imaging in asymptomatic patients with pulmonary sarcoidosis. European Respiratory Journal [Internet]. 2011;37(1):212 - 215.