Kolačević Zeljković, Mateja; Bulj, Nikola; Bašić-Kinda, Sandra; Milunović, Vibor; Čaržavec, Dubravka; Jakšić, Ozren; Vodanović, Marijo; Ostojić-Kolonić, Slobodanka; Gaćina, Petar; Dujmović, D; Željković, Ivan; Pejša, Vlatko; Aurer, Igor: Comprehensive cardiac evaluation reveals no increase in ventricular arrhythmias in patients on chronic ibrutinib therapy: a study of KroHem, the Croatian cooperative group for hematologic diseases