1. Kettering General Hospital, Kettering, Northamptonshire, UK
2. Honorary Senior Lecturer in Medicine, Penang Medical College, Consultant Physician and Endocrinologist, Seberange Jaya Hospital, Penang, Malaysia in Medicine, Penang Medical College, Penang, Malaysia
3. Senior Lecturer in Respiratory Medicine, Clinical School, Swansea University, Honorary Consultant Physician, Carmarthenshire NHS Trust, UK
4. General Practitioner, Kidwelly, Camarthenshire, UK