Affiliation: | 1. Department of Internal Medicine, Kulliyyah of Medicine, International Islamic University Malaysia, , Kuantan, Malaysia;2. Rheumatology Unit, Hospital Putrajaya, , Putrajaya, Malaysia;3. Department of Psychiatry, Universiti Kebangsaan Malaysia Medical Centre, , Kuala Lumpur, Malaysia;4. Department of Public Health, Universiti Kebangsaan Malaysia Medical Centre, , Kuala Lumpur, Malaysia;5. Rheumatology Unit, Universiti Kebangsaan Malaysia Medical Centre, , Kuala Lumpur, Malaysia |