mirza, Mamoora, Nasim Karim, Wahab Baksh kadri, and Shama Asghar. 2021. “Clinical Efficacy of 1% Metformin Gel and Systemic Doxycyline in Chronic Periodontitis”. Journal of Liaquat University of Medical & Health Sciences 20 (3):204-8. http://121.52.154.205/index.php/jlumhs/article/view/524.