1. Utrecht Institute for Pharmaceutical Sciences (S.P., A.L., T.v.S., P.S., H.G.L., A.d.B., F.d.V.), Division of Pharmacoepidemiology and Pharmacotherapy, University Utrecht, 3508 TB Utrecht, The Netherlands
2. Medical Research Council Epidemiology Resource Centre (T.v.S., C.C., F.d.V.), University of Southampton, Southampton S016 6YD, United Kingdom
3. Institute of Musculoskeletal Sciences (C.C.), University of Oxford, Oxford OX3 7LD, United Kingdom
4. Department of Endocrinology and Metabolism C (L.R., P.V.), Aarhus University Hospital, Aarhus Sygehus, 8000 Aarhus C, Denmark