Comput. cardiol. Comput. cardiol. Machine Learning to Find Areas of Rotors Sustaining Atrial Fibrillation from the ECG Luongo Giorgio Azzolin Luca Rivolta Massimo Walter Paggi de Almeida Tiago Martínez Juan Pablo Universidad de Zaragoza Coutinho Soriano Diogo Doessel Olaf Sassi Roberto Laguna Lasaosa Pablo Universidad de Zaragoza Loewe Axel 2020 research-article