1. Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
2. South Devon Healthcare NHS Foundation Trust, Torquay, UK
3. Hai District Medical Centre, Boman'gombe, Kilimanjaro, Tanzania
4. Northumbria Healthcare NHS Foundation Trust, North Tyneside General Hospital, North Shields, UK
5. Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK
6. Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
7. District Medical Office, Hai District Hospital, Boman'gombe, Hai, Tanzania
8. Department of Radiology, Kilimanjaro Christian Medical Centre, Moshi, Kilimanjaro Region, Tanzania