1. “Fondazione Ospedale San Camillo”-I.R.C.C.S.; Parkinson and Movement Disorders Unit; Venice Italy
2. Department of Psychiatry; University of Pennsylvania; Philadelphia USA
3. Department of Neurology; University of Pennsylvania; Philadelphia USA
4. Parkinson's Disease Research, Education and Clinical Center (PADRECC); Philadelphia Veterans Affairs Medical Center; Philadelphia USA
5. Mental Illness Research, Education and Clinical Center (MIRECC); Philadelphia Veterans Affairs Medical Center; Philadelphia USA