Saima Hanif, Sameer Ahmed, and Shaista Khan. “AWARENESS OF PERIODONTAL LIGAMENT INJECTION AMONG HOUSE OFFICERS AND POST GRADUATE TRAINEES- A CROSS SECTIONAL STUDY”. Pakistan Oral & Dental Journal, Vol. 41, no. 2, June 2021, pp. 73-75, https://podj.com.pk/index.php/podj/article/view/622.