Manmohan Sharma, Shubham Mohan Sharma, Divesh Singh, Prakhar Agarwal, and Aditya Jha, “Assessment of Disease Activity Score with Respect to Vitamin D in Rheumatoid Arthritis: An Observational Study”, Int. J. Heal. Clin. Res., vol. 5, no. 2, pp. 20–22, Jan. 2022.