Azizi, T., Hosseini, M. S., Mahmoudi, M., Shahverdi, E., Nahvi, G. and Aghdashi, F. (2019) “Prevalence of Periodontal Disease in Type 2 Diabetic Patients with and without Vitamin D Deficiency”, Journal of "Regeneration, Reconstruction & Restoration" (Triple R), 4(3), pp. 113–116. doi: 10.22037/rrr.v4i3.29314.