1727-558X1727-558XS1727-558X202100020000110.24265/horizmed.2021.v21n2.02PerúPerú0004202100042021212200735626262704-12201737619191859-662020952020917-2719662444807-16200724412-9200235993099309863-7320202529-39American Association of Neurological Surgeons202020195012123654-6120182233244-5020163066623-30201311822437-4320171922127-3520094012123828-33201820132016629943120152005211169-7420031996