Xin, Zenglian, Ningning Han, and Huiya Jin. “Correlation Analysis of Age and MTHFR C677T Polymorphism With Sperm Motility and Sperm DNA Integrity: Correlation of Age and MTHFR C677T With Sperm Quality”. Cellular and Molecular Biology 69, no. 6 (June 30, 2023): 110–115. Accessed May 19, 2024. http://cellmolbiol.org/index.php/CMB/article/view/4814.