@article{Youk2021_21,
  title = {Annual Report of the Korean Association of External Quality Assessment Service on Transfusion Medicine (2020)},
  author = {Youk, Hee-Jeong and Kim, Jin Seok and Yang, John Jeongseok and Kim, Hyungsuk and Ko, Dae-Hyun},
  journal = {Journal of Laboratory Medicine and Quality Assurance},
  year = {2021},
  doi = {10.15263/jlmqa.2021.43.4.167}
}