S. . Jawad, S. F. . Memon, A. A. . Shaikh, S. A. . Shaikh, A. A. . Uqaili, and A. . Hussain, “Vitamin D level among Patients of Inflammatory Bowel diseases and its Correlation with Severity of Disease”, apmc, vol. 16, no. 3, pp. 216–219, Jan. 2023.