Khaddour, abdulillah adel, and Omar Thaer Jawad. “Evaluation of Calcium, Vitamin D, Aromatase and Estradiol in Patients Suffer from Impotence in Bald City”. Samarra Journal of Pure and Applied Science, vol. 6, no. 2/2, Aug. 2024, pp. 72-84, doi:10.54153/sjpas.2024.v6i2/2.652.