1. Department of Laboratory Medicine, Severance Hospital, Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
3. Department of Laboratory Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea.
4. Department of Laboratory Medicine, Kwandong University College of Medicine, Gangneung, Korea.
5. Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea.
6. Department of Laboratory Medicine, Chosun University Hospital, Gwangju, Korea.
7. Department of Laboratory Medicine, CHA Bundang Medical Center, CHA Univeristy, Seongnam, Korea.