1. Physiotherapist’s Office Children’s Therapy in Szczecin, 71-502 Szczecin, Poland
2. Centre de Kinésithérapie Respiratoire et Fonctionnelle du Nord in Marcq en Baroeul, 59700 Marcq-en-Barœul, France
3. Institute of Respiratory and Neurodevelopmental Support for Children in Szczecin, 71-502 Szczecin, Poland
4. Department of Medical Biology, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland