S. Ahmed, Q. S. Akter, R. Ahmed, T. R. Choudhury, F. Kabir, and S. F. Azim, “ FEV1/FVC% and serum lead level of the traffic policemen in Dhaka city”., J Bangladesh Soc Physiol, vol. 13, no. 1, pp. 13–16, Aug. 2018.