[1] Singapore Gen Hosp, Dept Endocrinol, Osteoporosis & Bone Metab Unit, Singapore 169608, Singapore
[2] Singapore Gen Hosp, Dept Pharm, Singapore 169608, Singapore
[3] Singapore Gen Hosp, Dept Orthoped, Singapore 169608, Singapore
[4] Singapore Gen Hosp, Dept Emergency Med, Singapore 169608, Singapore
[5] Natl Univ Singapore Hosp, Div Rheumatol, Singapore, Singapore