Samrina Mohammad, Ihsan Ullah, Asif Ali, Umer Farooq, Khurshid Ali, Sabreen Hassan, and Muhammad Uzair Khan. “ALTERATIONS OF CIRCULATING TUMOUR DNA AS A BIOMARKER IN ORAL SQUAMOUS CELL CARCINOMA: A SYSTEMATIC REVIEW”. JOURNAL OF KHYBER COLLEGE OF DENTISTRY, vol. 12, no. 2, June 2022, pp. 41-45, doi:10.33279/jkcd.v12i2.61.