1. Fondazione IRCCS Istituto Neurologico Carlo Besta, Department of Clinical Neurosciences, Parkinson and Movement Disorders Unit, Milan, Italy
2. Department of Medicine and Pediatrics, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
3. Neurology Department, Hospital Universitario Burgos, Burgos, Spain
4. Department of Physiotherapy and Rehabilitation Sciences, University of Health and Allied Sciences, Ho, Ghana
5. Division of Physiotherapy, Stellenbosch University, Cape Town, South Africa