Fatima, P., B. C. Debnath, M. M. Hossain, D. Rahman, and J. Banu. “Effect of Smoking on Blood and Semen Lead Level in Male Partners of Infertile Couple”. Journal of Chittagong Medical College Teachers’ Association, vol. 19, no. 2, Nov. 2009, pp. 3-6, doi:10.3329/jcmcta.v19i2.3862.