1. Inherited Cardiac Disease Unit, University Hospital Virgen de la Arrixaca, Murcia, Spain
2. Internal Medicine Department, University of Murcia. Murcia, Spain
3. Center of Clinical Genetics and Biochemistry, University Hospital Virgen de la Arrixaca, Murcia, Spain
4. Pediatrics Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
5. Neurology Service, University Hospital, Virgen de la Arrixaca, Murcia, Spain