Ravihari, H. D. J. N.; Prabodha, L. B. L.
(Faculty of Allied Health Sciences, University of Ruhuna, Galle, Sri Lanka, 2020-10-02)
Background: Tobacco usage and exposure to tobacco smoke have serious impacts on human
health. Although it is most preventable cause of death in the world today, nearly 4 million
people die annually from tobacco related ...