1. Damghani M, Bazrafshani M, Mirshekari T. The Prevalence of P53 Mutations in Laryngeal Cancer in Kerman. J Kerman Uni Med Sci 2012; 19(2):168–75.
2. Azarhosh R, Taziki M. Metastatic cutaneous laryngeal cancer to form abscess, a case report. J Gorgan Uni Med Sci 2003;12(5):96–100.
3. Flint PW, Haughey BH, Robbins KT, Thomas JR, Niparko JK, Lund VJ, et al. Cummings otolaryngology–head and neck surgery. 6nd Edition. Elsevier Health Sciences; 2014.
4. Sarafraz M, Nik Akhlagh S, Ghazipour A, Saki N, Ahmadi Kh. Comparative evaluation of laryngeal cancer risk factors in elderly and non-elderly patients. Med Sci J 2007;7(4)479–84.
5. Shan'gina OV, Sdvizhkov AM, Finkel'shtern MR, Brennan P, Boffetta P, Zaridze DG. Risk factors of laryngeal cancers in central and Eastern Europe. Vopor Onkol 2007;53(3):321–8.
6. Risch A, Ramroth H, Raedts V, Rajaee-Behbahani N, Schmezer P, Bartsch H, Becher H, Dietz A. Laryngeal cancer risk in Caucasians is associated with alcohol and tobacco consumption but not modified by genetic polymorphisms in class I alcohol dehydrogenases ADH1B and ADH1C, and glutathione-S-transferases GSTM1 and GSTT1. Pharmacogenetics and Genomics. 2003;13(4):225-30.
7. Muscat JE, Wynder EL. Tobacco, alcohol, asbestos, and occupational risk factors for laryngeal cancer. Cancer. 1992; 69(9):2244–51.
8. Zheng W, Blot WJ, Shu XO, Gao YT, Ji BT, Ziegler RG, Fraumeni JF. Diet and other risk factors for laryngeal cancer in Shanghai, China. American Journal of Epidemiology. 1992;136(2):178–91.
9. De Stefani E, Correa P, Oreggia F, Leiva J, Rivero S, Fernandez G, Deneo‐Pellegrini H, Zavala D, Fontham E. Risk factors for laryngeal cancer. Cancer. 1987;60(12):3087–91.
10. Sartor SG, Eluf-Neto J, Travier N, Wünsch Filho V, Arcuri AS, Kowalski LP, et al. Occupational risks for laryngeal cancer: a case control study. Cad Saúde Pública. 2007;23(6) 1473–81.
11. Mousavi MR, Damghani MA, Haghdoust AK, Khamesipour A. Opium and Risk of Laryngeal Cancer. Laryngoscope 2003;113(1):1930–1943.
12. Kamangar F, Chow WH, Abnet CC, Dawsey SM. Environmental causes of esophageal cancer. Gastroenterol Clin N Am. 2009; 38(1):27–57.
13. Xue W, Warshawsky D. Metabolic activation of polycyclic and heterocyclic aromatic hydrocarbons and DNA damage: a review. Toxicol App Pharmacol. 2005;206(1):73–93.
14. Zaiadinin et al. The prevalence of drug abuse and addiction and related factors in the final year students. Kerman Med Uni J. 2006;2(13)84–94.
15. Yaghobi et al. Epidemiology, causes of addiction among the students of Mazandaran University of Medical Sciences. National Conference on Addiction. 2012.
16. Schacter DS, Gilbert DT, Wegner DM. Psychology. 2nd Edition, New York: Worth publisher; 2011.P552.
17. Saki N, Saki GH. Masomi A, Rahim F, Emad N. Assess the impact of smoking on laryngeal cancer in Khuzestan. J Res Jondishapour, 2011; 2(3):99–103.
18. Vassileiou A, Vlastarakos PV, Kandiloros D, Delicha E, Ferekidis E, Tzagaroulakis A, Nikolopoulos TP. Laryngeal cancer: smoking is not the only risk factor. B-ENT. 2012;8(4):273–8.
19. Menach P, Oburra HO, Patel A. Cigarette smoking and alcohol ingestion as risk factors for laryngeal squamous cell carcinoma at Kenyatta national hospital, Kenya. Clin Med Insights Ear Nose Throat. 2012;5:17–24.
20. Parker SL et al. Cancer statistics. Cancer 1996; 46:819.
21. Ghavamzadeh A, Moussavi A, Jahani M, Rastegarpanah M and Iravani M. Esophageal cancer in Iran. Semin Oncol 2001;28(2):153–7.
22. Sadjadi A, Derakhshan MH, Yazdanbod A, Boreiri M, Parsaeian M. Neglected role of hookah and opium in gastric carcinogenesis: a cohort study on risk factors and attributable fractions. Int J Cancer. 2014; 134(1):181–8.
23. Shakeri R, Malekzadeh R, Etemadi A, Nasrollahzadeh D, Aghcheli K. Opium: an emerging risk factor for gastric adenocarcinoma. Int J Cancer. 2013; 133(2):455–61.