1. Fundación Jiménez Díaz University Hospital and Institute of Biomedical Research, Madrid, Spain
2. Institute of Biosciences, Newcastle University, Newcastle upon Tyne, UK
3. Department of Anatomy and Cell Biology, Universidad de Extremadura, Badajoz, Spain
4. Arrhythmia and Electrophysiology Department, Biocor Instituto, Nova Lima, Minas Gerais, Brazil