1. Fondazione IRCCS, Istituto Neurologico Carlo Besta; Scientific Direction; via Celoria, 11 Milan Italy 20133
2. University of Modena and Reggio Emilia; Cochrane Italy, Department of Diagnostic, Clinical and Public Health Medicine; Via del Pozzo 71 Modena Italy 41124
3. AOU San Luigi Gonzaga; University of Turin, Division of Neurology; Regione Gonzole, 13 Orbassano Torino Italy 10043
4. Karolinska Institutet; Department of Clinical Neuroscience; Stockholm Sweden 17177
5. Kermanshah University of Medical Sciences; Department of Epidemiology and Biostatistics; Kermanshah Iran
6. Imperial College London; Department of Medicine, Division of Brain Sciences, Centre for Neuroscience, Wolfson Neuroscience Laboratories; Du Cane Road London UK W12 0NN
7. University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkenhubelweg 11 Bern Switzerland 3005