1 MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton SO16 6YD, UK; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Tremona Road, Southampton SO16 6YD, UK.
2 MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton SO16 6YD, UK.
3 Dept. of Internal Medicine, VieCuri Medical Center, Venloseweg 595971 PB Venlo, The Netherlands.
4 MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton SO16 6YD, UK; Paediatric Endocrinology, Southampton University Hospitals NHS Foundation Trust, Southampton SO16 6YD, UK.
5 Dept. of Internal Medicine, VieCuri Medical Center, Venloseweg 595971 PB Venlo, The Netherlands; Maastricht University Medical Center, Maastricht, The Netherlands.
6 Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands; University Hasselt, Hasselt, Belgium.
7 Department of Clinical Pharmacy & Toxicology, Maastricht University Medical Centre, Maastricht, The Netherlands.
8 Health eResearch Centre, Farr Institute for Health Informatics Research, University of Manchester, 1.003 Vaughan House, Portsmouth, Road, M13 9PL, UK; Department of Pharmacoepidemiology & Clinical Pharmacology, University of Utrecht, Utrecht, The Netherlands, 3508, TB.
9 MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton SO16 6YD, UK; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Tremona Road, Southampton SO16 6YD, UK; NIHR Musculoskeletal Biomedical Research Unit, University of Oxford, Nuffield Orthopedic Centre, Headington, Oxford OX3 7HE, UK. Electronic address: cc@mrc.soton.ac.uk.