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Tobacco smoking among school children in Colombo district, Sri Lanka.
Katulanda P, Liyanage IK, Wickramasinghe K, Piyadigama I, Karunathilake IM, Palmer PH, Matthews DR. Katulanda P, et al. Among authors: piyadigama i. Asia Pac J Public Health. 2015 Mar;27(2):NP278-87. doi: 10.1177/1010539512439228. Epub 2012 Mar 16. Asia Pac J Public Health. 2015. PMID: 22426558 Free PMC article.