Catheter ablation vs. thoracoscopic surgical ablation in long-standing persistent atrial fibrillation: CASA-AF randomized controlled trial. - Haldar, S; Khan, HR; Boyalla, V; Kralj-Hans, I; Jones, S; Lord, J; Onyimadu, O; Satishkumar, A; Bahrami, T; De, Souza A; Clague, JR; Francis, DP; et al. (European Heart Journal, 2020)