1. Jan Kochanowski University in Kielce, Orthopaedic and Traumatology Clinic Kielce, Poland
2. Alab Clinic, Zawodzie, Warsaw, Poland
3. Hip Arthroscopy Mexico, Av. Frida Kahlo, Monterrey, Mexico
4. Orthopaedic and Trauma Department, Medical University of Lodz, Poland
5. Medical University of Gdańsk, Gdańsk, Poland