1 Division of Advanced Internal Medicine, University Medicine Cluster, National University Hospital, National University Health System, Singapore. Electronic address: [email protected].
2 Chronic Program, Alexandra Hospital, National University Health System, Singapore; Division of Endocrinology, University Medicine Cluster, National University Hospital, National University Health System, Singapore.
3 Chronic Program, Alexandra Hospital, National University Health System, Singapore; Division of Rheumatology, University Medicine Cluster, National University Hospital, National University Health System, Singapore.