1. Institute of Physiotherapy and Health Sciences, Electromyography and Pelvic Floor Muscles Laboratory, Department of Physical Medicine, Academy of Physical Education in Katowice, Katowice, Poland
2. Department of Radiology and Nuclear Medicine, Medical University of Silesia, Katowice, Poland
3. Individual Specialist Medical Practice Maciej Cebula, Katowice, Poland
4. Institute of Physiotherapy and Health Sciences, Academy of Physical Education in Katowice, Katowice, Poland
5. Department of Physical Medicine, Academy of Physical Education in Katowice, Katowice, Poland
6. Institute of Physiotherapy and Health Sciences, Department of Physiotherapy in Internal Diseases, Academy of Physical Education in Katowice, Katowice, Poland