Mustafa Abdulkareem Alhameedi, and Wejdan Abdulabbas Ibrahim Aljanaby. “Association Between Serum 25-Hydroxyvitamin D Levels and Severity of Disease Among Iraqi Patients With Psoriasis A Hospital-Based Case-Control Study”. Academic Journal of Clinicians, vol. 8, no. 04, Oct. 2026, pp. 85-100, https://clinician.site/index.php/ajcs/article/view/257.