Hasanat, Md Abul, et al. “Effects of Exposure to Cotton Dusts on FVC, FEV1, and FEV1 FVC% in Male Cotton Dust Workers”. Journal of Bangladesh Society of Physiologist, vol. 11, no. 1, Sept. 2016, pp. 35-38, doi:10.3329/jbsp.v11i1.29708.