Biswajit Sarkar, Krishnachura Mitra, Deepak Chandra, Writtika Chattaraj and Sukanta Sen 2023. Study of Pulmonary Function Tests in Rheumatoid Arthritis Patients and to Establish Correlation between Pulmonary Function and Disease Activity of Rheumatoid Arthritis in Eastern India. Indian Journal of Public Health Research & Development. 14, 3 (Jun. 2023), 62–70. DOI:https://doi.org/10.37506/ijphrd.v14i3.19359.