1. Department of Obesity and Endocrinology, University Hospital Aintree, L9 7AL, U.K.
2. Institute of Ageing and Chronic Disease, University of Liverpool, L69 3GA, U.K.
3. Department of Musculoskeletal Biology and MRC–Arthritis Research UK Centre for Integrated research into Musculoskeletal Ageing (CIMA), University of Liverpool, L69 3GA, U.K.
4. Diabetes and Metabolic Medicine, Faculty of Health and Medical Sciences, University of Surrey, GU2 7WG, U.K.
5. Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, L3 5UA, U.K.
6. Department of Hepatology, Royal Liverpool University Hospital, L7 8XP, U.K.
7. Magnetic Resonance and Image Analysis Research Centre (MARIARC), University of Liverpool, L69 3GA, U.K.
8. Metabolic and Molecular Imaging Group, MRC Clinical Sciences Centre, Imperial College London, London, SW7 2AZ, U.K.