1. Department of Laboratory Medicine, Dongguk University Ilsan Hospital, Goyang, Korea.
2. KRC Jung-Bu Blood Laboratory Center, Daejeon, Korea.
3. Department of Laboratory Medicine, Chung-Ang University Hospital, Seoul, Korea.
4. Department of Laboratory Medicine, Korea University Guro Hospital, Seoul, Korea.
5. Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
6. Siemens Healthcare, Seoul, Korea.
7. Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.