Endoscopic study of ethmoidal canals in cadavers, including a histological analysis of their contents - Felippu, Alexandre Wady Debes; Morsch, Thiago Picolli; Felippu, Andre Wady Debes; Cascio, Filippo; Oliveira, Claudia Regina Gomes Cardim Mendes de; Felippu, Alexandre; Voegels, Richard Louis (International archives of otorhinolaryngology, 2024)