Awareness of Oral Cancer and OPMDs among Patients Attending the University Dental Hospital, Peradeniya, Sri Lanka - D. Somathunga, E. A. Shanika; H. Dissanayaka, D. M. Sithara; L. Ratnayake, D. R. Dilini; Jayasinghe, Ruwan (Asian Pacific Journal of Cancer Care, 2021)