Nida Ayub, Khalfan Haider, Laiba Amer, Asma Shakoor, Salman Aziz, Rabeea Yaqoob, Hira Butt, “Periodontal Treatment Needs of Smokers in Comparison to Non-Smokers: A Comparative Study”, Pakistan Journal of Medical & Health Sciences, vol. 17, no. 01, p. 567, Mar. 2023.