@article{sung phil chung2017of,
  title={Influence of rescuer strength and shift cycle time on chest compression quality},
  author={hyunjong kim,je sung you,sung phil chung},
  journal={Signa Vitae},
  volume={13},
  number={1},
  pages={70--74},
  doi = {10.22514/SV131.052017.29},
  year={2017}
}