1. Department of Laboratory Medicine, Ajou University Hospital, Suwon, Korea
2. Department of Laboratory Medicine, Asan Medical Center, Seoul, Korea
3. Department of Laboratory Medicine, Chungnam University Hospital, Daejeon, Korea
4. Department of Laboratory Medicine, Severance Hospital, Seoul, Korea
5. 5Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
6. Department of Biomedical Laboratory Science, Shinhan University, Uijeongbu, Korea
7. Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
8. Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
9. Blood Laboratory Center Central, Korean Red Cross, Seoul, Korea
10. Gyeonggi Red Cross Blood Center Central, Korean Red Cross, Suwon, Korea, Korea