Mandour M, Elzayat S, Elfarargy HH, Lotfy R, et al. Radiological classification of the mastoid portion of the facial nerve: impact on
the surgical accessibility of the round window in cochlear implantation. Acta Otolaryngol 2021 Aug 23:1-4. doi: 10.1080/00016489.2021.1963473.
PMID: 34424819