1 Centre National de la Recherche Scientifique, UMR CNRS 5287, Bordeaux Cedex, France.
2 Parkinson's Disease and Movement Disorders Center, Neurocenter of Southern Switzerland - Institute of Clinical Neuroscience of Southern Switzerland, Lugano, Switzerland; Faculty of Biomedical Sciences, University of Southern Switzerland, Lugano, Switzerland.
3 Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Malta; Neuroscience Division, School of Biosciences, Cardiff University, Cardiff, UK. Electronic address: giuseppe.digiovanni@um.edu.mt.