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4. U.S. Department of Health and Human Services (2006). The Health consequences of involuntary exposure to tobacco smoke: A Report of the Surgeon General. Atlanta (GA): Department of Health and Human Services, Centers for Disease Control and Prevention. Atlanta: Coordinating Center for Health Promotion, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health.
5. Department of Disease Control Ministry of Public Health (2005). Non-smokers’ health protection act B.E.2535 (1992). Bangkok: Sintawee Publishing.