Corrigendum: Regularization Techniques for ECG Imaging during Atrial Fibrillation: A Computational Study - Figuera, Carlos; Suárez-Gutiérrez, Víctor; Hernández-Romero, Ismael; Rodrigo, Miguel; Liberos, Alejandro; Atienza, Felipe; S. Guillem, María; Barquero-Pérez, Óscar; Climent, Andreu; Alonso-Atienza, Felipe (Frontiers in Physiology, 2016)