1. Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Korea
2. Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
3. Department of Laboratory Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
4. Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
5. Department of Laboratory Medicine, Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea