1. Global tobacco epidemic: American Cancer Society. Accessed February 28, 2006., [
http://www.cancer.org
]
2. Global Effects of Tobacco Use. Accessed February 28, 2006,, [
http://www.globalhealth.gov/
]
3. WHO Global Status Report-Paistan-1997: Tobacco Information and Prevention Source (TIPS), Centers for Disease Control. Accessed February 28, 2006., [
http://www.cdc.gov/tobacco/who/pakistan
]
4. Warren CW, Jones NR, Eriksen MP, Asma S: Patterns of global tobacco use in young people and implications for chronic disease burden in adults. The Lancet. 2006, S0140-6736(06)68192-0, [
http://www.thelancet.com/journals/eop
]
5. Rigotti NA, Lee JE, Wechsler H, US college student's use of tobacco products: Results of a National survey. JAMA. 2000, 284 (6): 699-705. 10.1001/jama.284.6.699.