1. Korle Bu Teaching Hospital, Accra, Ghana
2. Comboni Hospital, Sogakofe, Ghana
3. Parkinson Institute, Istituti Clinici di Perfezionamento, Milan, Italy
4. Centro Malattie Neurodegenerative, Salerno, University of Salerno, Italy
5. IDC Hermitage-Capodimonte, Naples, Italy
6. Chirundu Mission Hospital, Chirundu, Zambia