1. Department of Mechanical and Electrical Engineering, Digital and High-Frequency Electronics Section, University of Southern Denmark, 5230 Odense, Denmark
2. Surgical Research Unit, Odense University Hospital, 5000 Svendborg, Denmark
3. Department of Clinical Research, University of Southern Denmark, 5230 Odense, Denmark
4. Department of Medicine, OUH Svendborg Sygehus, 5700 Svendborg, Denmark
5. Department of Social Medicine and Public Health, Pomeranian Medical University, 70204 Szczecin, Poland