1. Materials Research Institute, Athlone Institute of Technology; Athlone Ireland
2. Ceramic and Glass Institute, Spanish National Research Council; Madrid Spain
3. School of Pharmacy; Queen's University; Belfast BT9 7BL UK
4. Centre for Medical Engineering Research; School of Mechanical and Manufacturing Engineering, Dublin City University; Dublin 9 Ireland
5. Trinity Centre for Bioengineering; Trinity Biomedical Sciences Institute, Trinity College Dublin; Dublin 2 Ireland
6. Rehabilitation Medicine Centre, Mayo Clinic; Rochester Minnesota