1. Bakhtiari S, Mortazavi H, Mehdipour M, Jafarian N, Ranjbari N, Rahmani S. Frequency of head and neck squamous cell carcinomas and related variables in southern Iran (Ahvaz City): 10-year retrospective study. Asian Pac J Cancer Prev 2017; 18(2): 375-79.
2. Naz S, Salah K, Khurshid A, Hashmi AA, Faridi N. Head and neck squamous cell carcinoma - comparative evaluation of pathological parameters in young and old patients. Asian Pac J Cancer Prev 2015; 16(9): 4061-3.
3. Fan Y, Zheng L, Mao MH, Huang MW, Liu SM, Zhang J, et al. Survival analysis of oral squamous cell carcinoma in a subgroup of young patients. Asian Pac J Cancer Prev 2014; 15(20): 8887-91.
4. Sasaki T, Moles DR, Imai Y, Speight PM. Clinico-pathological features of squamous cell carcinoma of the oral cavity in patients <40 years of age. J Oral Pathol Med 2005; 34(3): 129-33.
5. Mafi N, Kadivar M, Hosseini N, Ahmadi S, Zare-Mirzaie A. Head and neck squamous cell carcinoma in Iranian patients and risk factors in young adults: a fifteen-year study. Asian Pac J Cancer Prev 2012; 13(7): 3373-8.
6. Cariati P, Cabello-Serrano A, Perez-de Perceval-Tara M, Monsalve-Iglesias F, Martinez-Lara I. Oral and oropharyngeal squamouscell carcinoma in young adults: A retrospective study in Granada University Hospital. Med Oral Patol Oral Cir Bucal 2017; 22(6): e679-e685.
7. Kapila SN, Natarajan S, Boaz K. A comparison of clinicopathological differences in oral squamous cell carcinoma in patients below and above 40 years of age. J Clin Diagn Res 2017; 11(9): ZC46-ZC50.
8. Ho HC, Lee MS, Hsiao SH, Hwang JH, Hung SK, Chou P, et al. Squamous cell carcinoma of the oral cavity in young patients: a matched-pair analysis. Eur Arch Otorhinolaryngol 2008; 265(Suppl 1): S57-61.
9. Broders AC. Squamous-cell epithelioma of the lip: a study of five hundred and thirty-seven cases. JAMA 1920; 74(10): 656-64.
10. Anneroth G, Batsakis J, Luna M. Review of the literature and a recommended system of malignancy grading in oral squamous cell carcinomas. Scand J Dent Res 1987; 95(3): 229-49.
11. Bryne M, Koppang HS, Lilleng R, Kjaerheim A. Malignancy grading of the deep invasive margins of oral squamous cell carcinomas has high prognostic value. J Pathol 1992; 166(4): 375-81.
12. Falaki F, Dalirsani Z, Pakfetrat A, Falaki A, Saghravanian N, Nosratzehi T, et al. Clinical and histopathological analysis of oral squamous cell carcinoma of young patients in Mashhad, Iran: a retrospective study and review of literature. Med Oral Patol Oral Cir Bucal 2011; 16(4): e473-7.
13. Mallet Y, Avalos N, Le Ridant AM, Gangloff P, Moriniere S, Rame JP, et al. Head and neck cancer in young people: a series of 52 SCCs of the oral tongue in patients aged 35 years or less. Acta Otolaryngol 2009; 129(12): 1503-8.
14. Müller S, Pan Y, Li R, Chi AC. Changing trends in oral squamous cell carcinoma with particular reference to young patients: 1971-2006. The Emory University experience. Head Neck Pathol 2008; 2(2): 60-6.
15. Salem A. Dismissing links between HPV and aggressive tongue cancer in young patients. Ann Oncol 2010; 21(1): 13-7.
16. Sun Q, Fang Q, Guo S. A comparison of oral squamous cell carcinoma between young and old patients in a single medical center in China. Int J Clin Exp Med 2015; 8(8): 12418-23.
17. Udeabor SE, Rana M, Wegener G, Gellrich NC, Eckardt AM. Squamous cell carcinoma of the oral cavity and the oropharynx in patients less than 40 years of age: a 20-year analysis. Head Neck Oncol 2012; 4: 28.
18. Sadri D, Khodayari A, Gharvan S. Prevalence of oral squamous cell carcinoma in a group of young and old Iranian patients. J Dent Shiraz Univ Med Sci 2011; 12(2): 120-6.
19. Siriwardena BS, Tilakaratne A, Amaratunga EA, Tilakaratne WM. Demographic, aetiological and survival differences of oral squamous cell carcinoma in the young and the old in Sri Lanka. Oral Oncol 2006; 42(8): 831-6.
20. Troeltzsch M, Knösel T, Eichinger C, Probst F, Troeltzsch M, Woodlock T, et al. Clinicopathologic features of oral squamous cell carcinoma: do they vary in different age groups? J Oral Maxillofac Surg 2014; 72(7): 1291-300.
21. Ur Rahaman SM, Ahmed Mujib BR. Histopathological correlation of oral squamous cell carcinoma among younger and older patients. J Oral Maxillofac Pathol 2014; 18(2): 183-8.
22. Zhang YY, Wang DC, Su JZ, Jia LF, Peng X, Yu GY. Clinicopathological characteristics and outcomes of squamous cell carcinoma of the tongue in different age groups. Head Neck 2017; 39(11): 2276-82.