Dalal, K., S. Goyal, and S. Goyal. “The Effect of Vitamin D on Haemoglobin, Patient Assessed Disease Activity and Endoscopic Assessment in Ulcerative Colitis Patients With Anaemia”. International Journal of Basic & Clinical Pharmacology, vol. 12, no. 4, June 2023, pp. 556-62, doi:10.18203/2319-2003.ijbcp20231891.