@article{piergiorgio muriana2021surgical,
  title={Emergency surgical tracheotomy in the era of COVID-19 pandemic},
  author={piergiorgio muriana,paola ciriaco,angelo carretta,giampiero negri},
  journal={Signa Vitae},
  volume={17},
  number={3},
  pages={69--78},
  doi = {10.22514/sv.2021.055},
  year={2021}
}