3Issam Salman Al‑Azzawi1. B. B. “Evaluating VDR Gene Expression and Vitamin D3 Levels in Calcium Oxalate Kidney Stone Patients: A Comparative Study With Healthy Controls”. Iraqi Journal of Biotechnology, Vol. 24, no. 2, Nov. 2025, https://jige.uobaghdad.edu.iq/index.php/IJB/article/view/900.