[1
]
Department of Development & Regeneration, KU Leuven, Herestraat 49 box 805, Leuven,
3000 Belgium.
[2
]
Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology
and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill
Road, Oxford, OX3 7LD UK.
[3
]
Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology
and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill
Road, Oxford, OX3 7LD UK; Oxford University Hospitals NHS Foundation Trust, Oxford,
UK.
[4
]
Department of Biomedical Data Sciences, Leiden University Medical Centre, Albinusdreef
2, Leiden, 2333 ZA The Netherlands.
[5
]
Department of Development & Regeneration, KU Leuven, Herestraat 49 box 805, Leuven,
3000 Belgium; Department of Public Health & Primary Care, KU Leuven, Kapucijnenvoer
33J box 7001, Leuven, 3000 Belgium; Nuffield Department of Primary Care Health Sciences,
University of Oxford, Woodstock Road, Oxford, OX2 6GG UK.
[6
]
Department of Development & Regeneration, KU Leuven, Herestraat 49 box 805, Leuven,
3000 Belgium; Department of Biomedical Data Sciences, Leiden University Medical Centre,
Albinusdreef 2, Leiden, 2333 ZA The Netherlands. Electronic address: ben.vancalster@kuleuven.be.