Ishaq, N. A., and M. H. Al-sakaf. “Prevalence of Teeth Loss Related to Periodontitis Among Type 2 Diabetic Patients and Non Diabetic Patients in Faculty of Dentistry- Aden University”. University of Aden Journal of Natural and Applied Sciences, vol. 20, no. 2, Aug. 2016, pp. 445-53, doi:10.47372/uajnas.2016.n2.a18.