Butt, I. M., S. Hasnain, A. Chaudhary, J. Iqbal, A. Butt, and M. U. Farooq. “Lung Function Indices Among Marble Workers With Age Matched Healthy Individuals in Lahore”. Annals of Punjab Medical College, Vol. 17, no. 4, Dec. 2023, pp. 451-8, doi:10.29054/apmc/2023.1257.