[1] Seth Gordhandas Sunderdas Med Coll, Dept Med, Mumbai, Maharashtra, India
[2] King Edward Mem Hosp, Mumbai, Maharashtra, India
[3] St Louis Univ Hosp Sacred Heart, Dept Med, Baguio, Benguet, Philippines
[4] Virgen Milagrosa Univ Fdn, Coll Med, Dept Med, San Carlos City, Pangasinan, Philippines
[5] Univ Coll Med Sci, Dept Med, Delhi, India
[6] Univ Illinois, Dept Internal Med, Coll Med Peoria, Peoria, IL USA
[7] Univ Calif Merced, Dept Publ Hlth, Merced, CA USA
[8] Royal Wolverhampton Hosp NHS Trust, Dept Rheumatol, Wolverhampton, England
[9] Sandwell & West Birmingham Hosp NHS Trust, City Hosp, Birmingham, England
[10] Univ Manchester, Ctr Musculoskeletal Res, Sch Biol Sci, Div Musculoskeletal & Dermatol Sci, Manchester, England
[11] Royal Wolverhampton Hosp NHS Trust, Dept Rheumatol, Wolverhampton WV10 0QP, England