Nasreen, K., S. Ishrat, J. Banu, P. Fatima, S. A. Ansary, I. Jahan, S. Afrin, M. R. Karim, and M. K. Islam. “Comparison of Vitamin D (25OHD) Status Between Fertile and Infertile Men”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 10, no. 4, Mar. 2021, pp. 1303-9, doi:10.18203/2320-1770.ijrcog20211104.