Al-Ghurabei, B. “Evaluation of Serum Anti-Cardiolipin Antibody, Hs-CRP and IL-6 Levels in Chronic Periodontitis As Possible Risk Factors for Cardiovascular Diseases ”. Journal of Baghdad College of Dentistry, Vol. 24, no. Special Is, 1, pp. 161-5, http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/1376.