1 Department of Rheumatology, Westmead Hospital, Sydney, NSW 2145, Australia; Westmead Clinical School, Faculty of Medicine and Health Sciences, The University of Sydney, NSW, Australia; Rural Medical School, Coffs Harbour, Faculty of Medicine, University of New South Wales, NSW, Australia. Electronic address: peter.wong2@health.nsw.gov.au.
2 Department of Endocrinology, St Vincent's Hospital, Darlinghurst, Sydney, NSW, Australia; Healthy Ageing Theme, The Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW, Australia.