Sajjad Khan, N., R. Craven, A. Rafiq, and A. Rafiq. “Treatment of Periodontal Disease in Pregnancy for the Prevention of Adverse Pregnancy Outcomes: A Systematic Review of Systematic Reviews”. Journal of the Pakistan Medical Association, vol. 73, no. 3, Feb. 2023, pp. 611-20, doi:10.47391/JPMA.6432.