@article{young-hoon yoon2019transfusion,
  title={Massive transfusion protocol: the reason it is necessary},
  author={dong-keun kim,young-hoon yoon,jung-youn kim,young-duck cho,sung-jun park,sung-hyuk choi},
  journal={Signa Vitae},
  volume={15},
  number={1},
  pages={32--37},
  doi = {10.22514/SV151.042019.4},
  year={2019}
}