[1] The James Cook University Hospital,Department of Biochemistry
[2] Newcastle University,Musculoskeletal Research Group, Institute of Cellular Medicine
[3] Leiden University Medical Centre,Department of Rheumatology
[4] University Medical Centre Utrecht,Department of Rheumatology and Clinical Immunology
[5] Newcastle University,Institute for Ageing and Health
[6] The James Cook University Hospital,Department of Rheumatology