1. Department of Internal Medicine and Department of Clinical Physiology; Central Hospital Kristianstad; Kristianstad Sweden
2. Department of Electronics, Information and Bioengineering; Politecnico di Milano; Milano Italy
3. Department of Cardiology; Clinical Sciences and Center for Integrative Electrocardiology at Lund University (CIEL); Lund Sweden
4. Arrhythmia Clinic; Skåne University Hospital; Lund Sweden