@article{el-anwar_elaassar_foad_2016,  title={Non-mastoidectomy Cochlear Implant Approaches: A Literature Review},  volume={20},  ISSN={1809-4864},  url={https://doi.org/10.1055/s-0035-1558871},  DOI={10.1055/s-0035-1558871},  number={2},  journal={International Archives of Otorhinolaryngology},  publisher={Fundação Otorrinolaringologia},  author={El-Anwar, Mohammad Waheed and ElAassar, Ahmed Shaker and Foad, Yaser Ahmad},  year={2016},  month={Apr},  pages={180–184} }