1. Atlantic Technological University,Department of Computing,Letterkenny,Donegal,Ireland
2. School of Computing, Eng & Intel. Sys, Ulster University,L'Derry,Northern Ireland
3. Altnagelvin Hospital,Rheumatology Department,L'Derry,Northern Ireland
4. St James' Hospital,Department of Rheumatology,Dublin 8,Ireland
5. Dublin,Ireland
6. School of Medicine, Trinity College,Discipline of Physiotherapy,Dublin,Ireland