Butool, Fouqiya, Amanullah Mohammed, Parween Ali Syed, and Rasheed Abdul Mohammed. “Role of Serum Zinc and Copper Levels in Patients With Acne Vulgaris”. Journal of Orofacial Research 8, no. 4 (October 15, 2019): 71–75. Accessed July 29, 2026. https://mansapublishers.com/jofr/article/view/1818.