3Issam Salman Al‑Azzawi1Huda B. Babat,. 2025. “Evaluating VDR Gene Expression and Vitamin D3 Levels in Calcium Oxalate Kidney Stone Patients: A Comparative Study With Healthy Controls”. Iraqi Journal of Biotechnology 24 (2). https://jige.uobaghdad.edu.iq/index.php/IJB/article/view/900.