1. Nutrition & Bone Health, Elsie Widdowson Laboratory; Medical Research Council Human Nutrition Research; Fulbourn Rd CB1 9NL Cambridge UK
2. Arthritis Research UK Centre for Epidemiology, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine, and Health, Manchester Academic Health Science Centre; The University of Manchester; Oxford Road Manchester M13 9PT UK
3. Radiology and Manchester Academic Health Science Centre (MAHSC); Manchester Royal Infirmary, Central Manchester University Hospitals NHS Foundation Trust and University of Manchester; Oxford Road Manchester M13 9WL UK
4. Novotec Medical GmbH; Durlacher Str. 35 Pforzheim 75172 Germany
5. Andrology Research Unit, Centre for Endocrinology and Diabetes, Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre (MAHSC); The University of Manchester, Central Manchester University Hospitals NHS Foundation Trust; Old St Mary's Building, Hathersage Road Manchester M13 9WL United Kingdom
6. NIHR Manchester Musculoskeletal Biomedical Research Unit; Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre; Grafton Street Manchester M13 9WL UK
7. Department of Rheumatology; Salford Royal NHS Foundation Trust; Stott Lane Salford M6 8HD UK
8. Medical Research Council Lifecourse Epidemiology Unit; University of Southampton; Tremona Road Southampton SO16 6YD UK