BMC Public Health 2008, 8(Suppl 1):S2 http://www.biomedcentral.com/1471-2458/8/S1/S2 Secundaria de Menores. 2002. Lima; Impresos & C.; 2004. 7. Zárate M, Zavaleta A, Danjoy D , Chaname E, Prochazka R, Salas M, Maldonado V: Prácticas de consumo de tabaco y otras drogas en estudiantes de ciencias de la salud de una universidad privada de Lima, Perú. Investigación y Educación en Enfermería 2006, 24:72-81. 8. Research and Markets: Tobacco in Peru to 2011 [http://www. researchandmarkets.com/reports/c78453] 9. Shafey O, Dolwick S, Guindon E: The 12th World Conference on Tobacco or Health. Tobacco Control Country Profiles. Second Edition. Atlanta: American Cancer Society, Inc., World Health Organization, and International Union Against Cancer; 2003. 10. Organización Mundial de la Salud: Neurociencia del Consumo y Dependencia de Sustancias Psicoactivas.Washington DC: OPS; 2005. 11. Pampel FC: Global patterns and determinants of sex differences in smoking. Int J Comparative Sociol 2006, 47:466-487. 12. The Global Tobacco Surveillance System Collaborating Group: The global tobacco surveillance system (GTSS): purpose, production and potential. J Sch Health 2005, 75:15-24. 13. Warren CW, Jones NR, Eriksen MP, Asma S: Patterns of global tobacco use among young people and implications for future chronic disease burden in adults. Lancet 2006, 367:749-753. 14. Zavaleta A: Global Youth Tobacco Survey in Huancayo, Lima, Trujillo and Tarapoto, Peru. Final Report. 2000 [http://www.who. int/tobacco/surveillance/peru%20report.pdf] 15. Zavaleta A, Salas M: Tabaquismo en escolares de secundaria - Peru 2003. (Encuesta mundial de tabaco en la juventud: GYTS/EMTJ). Cuadernos de Promoción de la salud (Lima) 2005, 15: 11-50. [http://www.per.ops-oms.org/doc/bvs-pwr/psal/e/fulltex/ cuaderno%2015.pdf] 16. Pierce JP, Choi WS, Gilpin EA, Farkas AJ, Merritt RK: Validation of susceptibility as a predictor of which adolescents take up smoking in the United States. Health Psychol 1996, 15:355-361. 17. Hinkle DE, Wiersma W, Jurs SG: Applied Statistics for the Behavioral Sciences. 5th edition. Boston, MA: Houghton Mifflin Co.; 2003. 18. Shah BV, Barnwell BG, Bieler GS: Software for the Statistical Analysis of Correlated Data (SUDAAN): User’s Manual. Release 7.5, 1997. Research Triangle Park, NC: Research Triangle Institute; 1997. 19. Brener ND, Kann L, McMannus T, Kinchen SA, Sundberg EC, Ross JG: Reliability of the 1999 Youth Risk Behaviors Survey Questionnaire. J Adolesc Health 2002, 31:336-342. 20. Warren CW, Riley L, Asma S, Eriksen MP, Green L, Blanton C, Loo C, Batchelor S,Yach D: Tobacco use by youth: a surveillance report from the Global Youth Tobacco Survey project. Bull World Health Organ 2000, 78:868-876. 21. The GYTS Collaborative Group: Tobacco use among youth: a cross country comparison. Tobacco Control 2002, 11:252-270. 22. The GYTS Collaborating Group: Differences in worldwide tobacco use by gender: findings from the Global Youth Tobacco Survey. J Sch Health. 2003, 73:207-215. 23. WHO Report on the Global Tobacco Epidemic, 2008: The MPOWER package. Geneva:World Health Organization; 2008. 24. Wiehe SE, Garrison MM, Christakis DA, Ebel BE, Rivara FP: A systematic review of school-based smoking prevention trials with long-term follow-up. J Adolesc Health 2005, 36:162-169. 25. Ranney L, Melvin C, Lux L, McClain E, Morgan L, Lohr K: Tobacco Use: Prevention, Cessation, and Control. Evidence Report/Technology Assessment No. 140. (Prepared by the RTI International-University of North Carolina Evidence-Based Practice Center under Contract No. 290-02-0016).AHRQ Publication No. 06-E015. Rockville, MD:Agency for Healthcare Research and Quality; 2006. 26. Jha P, Chaloupka FJ: Tobacco Control in Developing Countries. Oxford, England: Oxford University Press; 2000. Page 9 of 9 (page number not for citation puroposes)