Mahmood Hussein, Karim, Ahmed Mahmood Hussein, and Ali Khalaf Salim. “Relation of Backache and Level of Vitamin D in a Sample of Patients That Attend Azadi Teaching Hospital in Kirkuk City”. Journal of Wildlife and Biodiversity 7, no. Special Issue (November 28, 2023): 252–261. Accessed July 3, 2024. https://wildlife-biodiversity.com/index.php/jwb/article/view/502.