1. Department of Neurorehabilitation, Hospital of Vipiteno (SABES-ASDAA), Vipiteno-Sterzing, Italy.
2. Fresco Parkinson Center, Villa Margherita, S. Stefano Riabilitazione, Vicenza, Italy.
3. Department of Neurology, The Marlene & Paolo Fresco Institute for Parkinson's & Movement Disorders, NYU School of Medicine, New York, New York, USA.
4. Department of Life Sciences, University of Trieste, Trieste, Italy.
5. Department of Neurology, Franz Tappeiner Hospital (SABES-ASDAA), Merano-Meran, Italy.
6. Department of Neurology, Christian Doppler Medical Center, Paracelsus University Salzburg, Salzburg, Austria.