Langner, E., A. D. Negro, H. K. Akashi, P. P. C. Araújo, A. J. Tincani, and A. S. Martins. “Schwannomas in the Head and Neck: Retrospective Analysis of 21 Patients and Review of the Literature”. São Paulo Medical Journal, vol. 125, no. 4, July 2007, pp. 220-2, https://periodicosapm.emnuvens.com.br/spmj/article/view/2132.