R. Sumithrarachchi, S., Pemasiri, W., Pathiranage, A. D., & Jayasooriya, P. R. (2021). Betel Quid, Smoking and Alcohol Dependency among Patients with Oral Potentially Malignant Disorders and Oral Cancer in Sri Lanka; A Preliminary Case-control Study. Asian Pacific Journal of Cancer Biology, 6(3), 207-212. https://doi.org/10.31557/apjcb.2021.6.3.207-212