Osman, G. A., H. A. Rasheed, Y. M. Younis, N. K. Aziz, and H. K. Saber. “Chronic Obstructive Pulmonary Disease As a Cardiovascular Diseases Risk Factor in Erbil”. Erbil Journal of Nursing and Midwifery, vol. 2, no. 2, Nov. 2019, pp. 93-100, doi:10.15218/ejnm.2019.12.