Singh, R., Parmar, R.S., Verma, S., Meena, P.D., Pathak, V.K. and Bhadoria, A.S. 2021. Cardiac function abnormalities in rheumatoid arthritis and its association with duration of disease: a hospital-based case control study. International Journal Of Community Medicine And Public Health. 8, 7 (Jun. 2021), 3478–3483. DOI:https://doi.org/10.18203/2394-6040.ijcmph20212605.