@article{holger herff2024special,
  title={A special face mask with integrated angle meter to optimize the head position for bag-valve-mask ventilation—a prospective simulated proof-of-concept study},
  author={fabio schumacher,natalia oberhanss,peter paal,urs pietsch,wolfgang wetsch,volker wenzel,holger herff},
  journal={Signa Vitae},
  volume={20},
  number={3},
  pages={1--6},
  doi = {10.22514/sv.2024.023},
  year={2024}
}