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Anatomic diagram of the neck depicting the boundaries of the 6 neck levels and 3 neck sublevels | Robbins KT, Shaha AR, Medina JE, Califano JA, Wolf GT, Ferlito A, et al. Consensus Statement on the Classification and Terminology of Neck Dissection. Arch Otolaryngol Neck Surg [Internet]. 2008 May 1 [cited 2017 Mar 28];134(5):536. Available from: http://archotol.jamanetwork.com/article.aspx?doi=10.1001/archotol.134.5.536