1. Department of Rehabilitation, Postgraduate Medical Education Centre, Gruca Orthopedic and Trauma Teaching Hospital in Otwock, Otwock, Poland
2. Department of Rehabilitation, Medical University of Warsaw, Warsaw, Poland
3. Department of Rehabilitation, National Geriatrics, Rheumatology and Rehabilitation Institute, Warsaw, Poland
4. Department of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland
5. Department of Anesthesiology and Intensive Care, Infant Jesus Clinical Hospital, Warsaw, Poland
6. Centre of Comprehensive Rehabilitation, Konstancin, Poland
7. Department of Prosthodontics, Medical University of Warsaw, Warsaw, Poland