Sharaf, R., B. Mahmoud Abdalla, S. El Naggar, and W. Moustafa. “Expression of Vitamin D Receptor (VDR) in Urinary Bladder Carcinoma: Immunohistochemical and Histopathological Study”. Asian Pacific Journal of Cancer Biology, Vol. 7, no. 3, Sept. 2022, pp. 245-53, doi:10.31557/apjcb.2022.7.3.245-253.