1. Cancer incidence and mortality data Sri Lanka, Sri Lanka cancer registry 17th publication 2015; 17.
2. Ather I, Siddiqui M, Farooq U, Ahmed R, Siddiqui SM, Rafi T. Role of Toluidine Blue in Early Detection of Oral Cancer. Pak J Med Sci 2006; 22(2): 184-7.
3. Ali FM, Prasant MC, Ashok P, Kedar S, Vinit A, Safiya T, Deshpande R. Diagnostic Test for cancer Detection in Dental & E.N.T. Clinics: The Toluidine blue test. JK-Practitioner 2012; 17(4): 47-49.
4. Chaudhary A, Manjunatha M, Gupta I. Evaluation of Efficacy of Toluidine Blue in the Detection of Potentially Malignant Disorders. J Adv Med Dent Scie 2013; 1(2): 19-24.