Monophasic versus biphasic waveform shocks for atrial fibrillation cardioversion in patients with concomitant amiodarone therapy - Kawabata, Vitor Sérgio; Vianna, Caio B.; Moretti, Miguel A.; Gonzalez, Maria M.; Ferreira, João F.; Timerman, Sérgio; Cesar, Luiz A. (Europace, 2007)