1. Department of Physiotherapy, Józef Rusiecki University College in Olsztyn, Bydgoska, Poland
2. Department of Rehabilitation and Physiotherapy, University of Medical Sciences, Poznan, Poland
3. Department of Orthopedics, Pediatric Orthopedics and Traumatology, The Centre of Postgraduate Medical Education in Warsaw, Otwock, Poland
4. Department of Rehabilitation, The Voivodeship Rehabilitation Hospital For Children in Ameryka, Ameryka, Poland
5. Department of Spine Disorders and Pediatric Orthopedics, University of Medical Sciences, Poznan, Poland