Nasser, H. A., M. K. Ismael, and M. M. F. Al. Halbosiy. “The Relationship Between Chlamydia Pneumoniae Infection and TNF-α in Cardiovascular Disease Patients”. Iraqi Journal of Science, Vol. 59, no. 4A, Oct. 2018, pp. 1836-42, https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/538.