A Nune1, K P Iyengar2, P Ish3, B Varupula4, C A Musat5, H R Sapkota6. 1. From the Department of Rheumatology, Southport and Ormskirk NHS Trust, Southport, UK. PR8 6PN. 2. Department of Trauma and Orthopaedics, Southport and Ormskirk NHS Trust, UK, PR8 6PN. 3. Department of Pulmonary and Critical Care Medicine, VMMC and Safdarjung Hospital, Delhi 110029, India. 4. Department of Endocrinology, Southport and Ormskirk NHS Trust, Southport, UK, PR8 6PN. 5. Department of Medicine, Southport and Ormskirk NHS Trust, Southport, UK. PR8 6PN. 6. Department of Rheumatology, The Royal Wolverhampton NHS Trust, UK, WV10 0QP.