Sharma, Nisha, Ashutosh Halder, Seema Kaushal, Manoj Kumar, and Manish Jain. “Metallothionein Gene Polymorphism Associated With Cd and Hg Levels in Non-Obstructive Azoospermia Patients: A Hospital-Based Observational Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 14, no. 7 (June 26, 2025): 2200–2208. Accessed October 26, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/15440.