Affiliation: | (1) Division of Rheumatology, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore;(2) Department of Psychology, Faculty of Arts and Social Sciences, National University of Singapore, Singapore;(3) Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore;(4) Division of Rheumatology, Department of Medicine and Therapeutics, Ninewells Hospital & Medical School, University of Dundee, Dundee, UK |