Gupta, S., D. Tripathi, D. Mathew, M. Sharma, K. A. Hasmukhbhai, K. R. Sharma, S. K. Verma, S. S. Saiyad, and V. Khandelwal. “Clinical Implications of the Second and Fourth Digit Ratio in Male Infertility: Associations With Semen Parameters and Sex Hormone Levels - a Cross-Sectional Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 14, no. 10, Sept. 2025, pp. 3487-94, doi:10.18203/2320-1770.ijrcog20253097.