1. 1) Ogawa K, Nakamura K, Hatano K, et al.: Treatment and prognosis of squamous cell carcinoma of the external auditory canal and middle ear: a multi-institutional retrospective review of 87 patients. Int J Radiat Oncol Biol Phys 68: 1326–1334, 2007
2. 2) Gandhi AK, Roy S, Biswas A, et al.: Treatment of squamous cell carcinoma of external auditory canal: a tertiary cancer centre experience. Auris Nasus Larynx 43: 45–49, 2016
3. 3) Gidley PW, Roberts DB, Sturgis EM: Squamous cell carcinoma of the temporal bone. Laryngoscope 120: 1144–1151, 2010
4. 4) Moody SA, Hirsch BE, Myers EN: Squamous cell carcinoma of the external auditory canal: an evaluation of a staging system. Am J Otol 21: 582–588, 2000
5. 5) Mazzoni A, Danesi G, Zanoletti E: Primary squamous cell carcinoma of the external auditory canal: surgical treatment and long-term outcomes. Acta Otorhinolaryngol Ital 34: 129–137, 2014