Ul Haq, M. M. ., M. A. Ul Haq, T. Durrani, O. Humayun, I. . Ullah, and D. Durrani. “Serum Vitamin-D Levels And Severity Of Clinical Depression In Patients Of A Psychiatric Clinic in Pakistan: Serum Vitamin-D Levels and Severity of Clinical Depression”. Pakistan Journal of Health Sciences, vol. 3, no. 05, Oct. 2022, pp. 208-12, doi:10.54393/pjhs.v3i05.168.