Keskin, Mehmet, Salih Budak, Tuǧba Zeyrek, Orçun Çelik, Oguz Mertoglu, Mehmet Yoldas, and Yusuf Ilbey. “The Relationship Between Serum Hormone Levels (follicle-Stimulating Hormone, Luteinizing Hormone, Total Testosterone) and Semen Parameters”. Archivio Italiano di Urologia e Andrologia 87, no. 3 (September 30, 2015): 194-197. Accessed September 30, 2020. https://pagepressjournals.org/index.php/aiua/article/view/aiua.2015.3.194.