Farag, Rabie Said, Mohamed Abdel El Nawawy, Wael Mohamed Fathy, and Hamada Atiaa. “Effect of Oral Injection of Tramadol, Sildenafil and Combined of Tramadol and Sildenafil on Serum Testosterone Level for Wistar Breed Male Rats”. INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 11, no. 9 (December 5, 2013): 2959–2966. Accessed November 26, 2024. https://rajpub.com/index.php/ijct/article/view/3411.