Workplace based potentially malignant oral lesions screening among tobacco consuming migrant construction site workers in Chennai, South India: A pilot study oleh Sree S Tirukkovalluri, C P Luck, R L. S. Makesh, P T Akhshaya, A Radhakrishnan, R C Karthick, Balaji Arumugam, N Gunasekaran, Sudhanshu R Patwardhan