ERRATUM for the paper: Cytology of Pericardial Effusion due to Malignancy. Kalogeraki A, Lazopoulos G, Papadakis GZ, Tamiolakis D, Karvela-Kalogeraki I, Karvelas-Kalogerakis M, Segredakis J, Papadakis M, Moustou E, Datseri G, Chalkiadakis GE, Tzardi M. Rom J Intern Med. 2016 Sep 1;54(3):179-183. doi: 10.1515/rjim-2016-0026.”