Sinha, Abhirup, raja Bhattacharya, Ritasman Baisya, Urmimala Bhattacharjee, Pallab Biswas, and Akashdisp Bhattacharya. 2017. “A STUDY TO COMPARE CLINICAL FEATURES AND LABORATORY FINDINGS OF SEROPOSITIVE AND SERONEGATIVE CASES OF RHEUMATOID ARTHRITIS”. National Journal of Medical Research 7 (03):127-30. https://njmr.in/index.php/file/article/view/205.