Prevalence of Addictive Substances (Except Tobacco and Alcohol) among Teenage School Children in the District of Colombo, Sri Lanka

Isurujith K LiyanagePaula H. PalmerDavid R. MathewsKremlin K. WickramasinghePrasad KatulandaIndika KarunathilakeA.C.A. PathiranaSupun KulatungaIndunil Piyadigama2026-06-022026-06-022009https://203.71.86.71/handle/123456789/40987application/pdfen-US資訊處2009年APACPH研討會論文集Prevalence of Addictive Substances (Except Tobacco and Alcohol) among Teenage School Children in the District of Colombo, Sri Lankaconference