Moraes, F. Y., L. A. Bonifacio, G. N. Marta, S. A. Hanna, Álvaro N. Atallah, V. Y. Moraes, J. L. F. Silva, and H. A. Carvalho. “Hierarchy of Evidence Referring to the Central Nervous System in a High-Impact Radiation Oncology Journal: A 10-Year Assessment. Descriptive Critical Appraisal Study”. São Paulo Medical Journal, vol. 133, no. 4, July 2015, pp. 307-13, https://periodicosapm.emnuvens.com.br/spmj/article/view/1444.