1. Leiden University Medical Center; Department of Rheumatology; Leiden Netherlands
2. Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University; Monash Department of Clinical Epidemiology, Cabrini Hospital; Suite 41, Cabrini Medical Centre 183 Wattletree Road Malvern Victoria Australia 3144
3. Deakin University; Director, Public Health Innovation, Deakin; 221 Burwood Highway Burwood Victoria Australia 3125
4. National Trauma Research Institute, The Alfred Hospital, Monash University; Level 4, 89 Commercial Road Melbourne Victoria Australia 3004