1. Department of Rehabilitation, Valduce Villa Beretta Hospital, 23845 Costa Masnaga, Italy
2. Department of Neurorehabilitation and Physical Therapy, Vivantes Hospital Spandau, 13585 Berlin, Germany
3. Gailtal-Klinik, A-9620 Hermagor, Austria
4. Department of Physical Medicine and Rehabilitation, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
5. Kansas City Bone and Joint Clinic, Overland Park, KS 66211, USA
6. Merz Therapeutics GmbH, 60318 Frankfurt am Main, Germany
7. Unit of Spasticity and Movement Disorders, Division of Physical Medicine and Rehabilitation, University Hospital of Foggia, 71100 Foggia, Italy