7U.S. Department of Health and Human Services. Preventing tobacco use among young people: a report of the Surgeon General[R]. Atlanta (GA): U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Office on Smoking and Health, 1994.
8Jackson C. Cognitive Susceptibility to Smoking and Initiation of Smoking during Childhood : A Longitudinal Study [J].Preventive Medicine, 1998,27( 1 ): 129-134.
9Greenland S. Quantitative methods in the review of epidemiologic literature [ J ] . Epidemiologic reviews, 1987,9( 1 ): 4-6.
10Egger M, Smith GD, Airman DG. Systematic Reviews in Health Care [ M]. Second edition. London: BMJ Publishing Group,2001. 285-312.