1 Department of Pediatrics, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea.
2 Department of Laboratory Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Korea.
3 Department of Laboratory Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea.
4 Department of Pharmacology, Yonsei University College of Medicine, Seoul 03722, Korea; Department of Medicine, Physician-Scientist Program, Yonsei University Graduate School of Medicine, Seoul, Korea; Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea. Electronic address: johnhoon1@yuhs.ac.