1. Department of Laboratory Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
2. Blood Laboratory Center, Central, Korean Red Cross, Seoul, Korea
3. Blood Laboratory Center, Nambu, Korean Red Cross, Busan, Korea
4. Department of Laboratory Medicine, Inje University College of Medicine, Busan, Korea
5. Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
6. Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea