1. Department of Laboratory Medicine, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
2. Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Pediatrics, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
4. Department of Dermatology, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
5. Department of Biochemistry and Cell Biology, Rice University, Houston, Texas, USA.