Fadhil, A., Nema, M. and Abdalrazak, S. (2014) “The Use of Volumetric Chest Computed Tomography in Determination of Chronic Obstructive Pulmonary Disease Phenotypes”, Journal of the Faculty of Medicine Baghdad, 56(1), pp. 20-24. doi: 10.32007/jfacmedbagdad.v120-24%.