1. Departments of Cardiology, Exercise Physiology and Physiology, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium,
2. Departamento de Matemática Aplicada, CMUP, Faculdade de Ciências, Universidade do Porto, Portugal
3. Departments of Cardiology, Exercise Physiology and Physiology, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium