R P Goswami1, S Mondal2, D Lahiri2, K Basu2, S Das2, P Ghosh2, A Ghosh2. 1. From the Department of Rheumatology, Institute of Post Graduate Medical Education and Research, Kolkata, India rudra.goswami@gmail.com. 2. From the Department of Rheumatology, Institute of Post Graduate Medical Education and Research, Kolkata, India.