Atrial fibrillation in endomyocardial fibrosis is a marker of worse prognosis - Barretto, Antonio Carlos Pereira; Mady, Charles; Nussbacher, Amit; Ianni, Bárbara Maria; Oliveira, Sérgio Almeida de; Jatene, Adib; Ramires, José Antônio Franchini (International Journal of Cardiology, 1998)