1. Laboratory of Physiology, Faculty of Medicine, University of Ioannina, Ioannina, Greece
2. Institute of Medical Engineering (IMETUM), Technical University of Munich, Munich, Germany
3. Department of Internal Medicine, General Hospital of Nikaia Agios Panteleimon, Piraeus, Greece
4. Maxillofacial Surgery, Faculty of Medicine, University of Ioannina, Ioannina, Greece