1. Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Korea.
2. Maeil Innovation Center, Maeil Dairies Co., Ltd., Pyeongtaek 17714, Korea.
3. Department of Pediatrics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea.
4. Department of Pediatrics, Ajou University School of Medicine, Suwon 16499, Korea.
5. Department of Pediatrics, Yonsei University College of Medicine, Seoul 03722, Korea.
6. Department of Pediatrics, Soonchunhyang University Hospital, Seoul 04401, Korea.
7. Department of Pediatrics, Yonsei University Wonju College of Medicine, Wonju 26426, Korea.
8. Department of Pediatrics, Inha University Hospital, Inha University College of Medicine, Incheon 22332, Korea.