[1] Natl Univ Hlth Syst, Natl Univ Hosp, Div Rheumatol, Dept Med, Singapore, Singapore
[2] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Med, Singapore, Singapore
[3] Natl Univ Hlth Syst, Natl Univ Hosp, Div Primary Care, Dept Care Integrat & Alliance, Singapore, Singapore
[4] Natl Univ Hlth Syst, Natl Univ Hosp, Clin Nursing Unit, Singapore, Singapore
[5] Natl Univ Hlth Syst, Univ Med Cluster, Div Rheumatol, Singapore, Singapore