Safi, Sanna, Saima Manzoor, Umar Nasir, Fahim Ullah, Noor Durrani, and Farooq Taj. 2021. “Aphthous Ulceration – Risk Factors Among Dental Students at Khyber College of Dentistry, Peshawar”. Journal of Gandhara Medical and Dental Science 8 (3):47-52. https://doi.org/10.37762/jgmds.8-3.195.