1. College of Medicine, Ajman University, Ajman P.O. Box 346, United Arab Emirates
2. Department of Medicine and HIV Metabolic Clinic, Milton Keynes University Hospital NHS Foundation Trust, Eagelstone, Milton Keynes MK6 5LD, UK
3. Department of Geriatric Medicine, Milton Keynes University Hospital NHS Foundation Trust, Eagelstone, Milton Keynes MK6 5LD, UK
4. Honorary Senior Lecturer of the Faculty of Medicine and Health Sciences, University of Buckingham, Buckingham MK18 1EG, UK