Mirza , Khalid B, Abdulkareem Hussain Al- Saidy, and Chenar Anwar Mohammad. 2019. “The Prevalence And Severity of Periodontal Disease in Different Stages of Pregnancy and in Women Taking Oral (Contraceptive Pills) in Sulaimani City, Kurdistan Region, Iraq ”. Diyala Journal of Medicine 4 (1):61-73. https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/411.