George M, Borsotti F, Gereige R, Kolethekkat AA, et al. A systematic review of the primary squamous cell carcinoma of the external
auditory canal: survival outcome based on T-staging and proposal of a new
classification. J Laryngol Otol 2021 Feb 11:1-8. doi: 10.1017/S0022215121000323.
PMID: 33568243