Dunga, J. A., Alkali, N. H., Alkali, M., Adamu, Y. M., Bakki, B., & Kida, I. M. (2015). Chronic Obstructive Pulmonary Disease as Measured by FEV1, FVC and FEV1/FVC Ratio among Saw Mill Workers in Jos, Northern Nigeria. The Nigerian Health Journal, 15(1), 1. Retrieved from https://tnhjph.com/index.php/tnhj/article/view/182