1. Faculty of Biomedical Engineering, Department of Biomaterials and Medical Devices Engineering Silesian University of Technology Zabrze Roosevelta 40 Poland
2. Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials Silesian University of Technology Gliwice Konarskiego 18 Poland
3. Manufacturer of Medical Instruments Chirmed Marcin Dyner
4. PPUH Medyn Aneta Dyner