1. Geriatric Rehabilitation Clinic Centre Hospitalier du Nord, Luxembourg
2. Rehabilitation Clinic Patras University Hospital, Greece
3. Department of Medical Physics, School of Medicine, University of Patras, Greece
4. Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
5. Orthopaedic Department, Patras University Hospital, Greece
6. Jefferson MossRehab/Magee Rehabilitation Hospitals Asfa, USA