8ZWEIG JM, LINDBERG LB, MCGINLEY KA. Adolescent health risk profiles: The co-occurrence of health risks among females and males [ J]. J Youth Adoles,2001,30(6) :707-728.
9BRENER ND, COLLINS JA. Co-occurrence of health-risk behaviors among adolescents in the United States [ J ]. J Youth Adoles, 1998, 22 (3) :209-213.
10WHO. Guidelines for the conduct of tobacco smoking survey of the general population report [ R ]. Geneva: WHO, 1982.