1. Department of General Internal Medicine, Tenri Hospital , Nara , Japan
2. Department of Infection Control, Graduate School of Medicine, Osaka University , Osaka , Japan
3. Department of Transformative Protection to Infectious Disease, Graduate School of Medicine, Osaka University , Osaka , Japan
4. Medical Home Care Center, Tenri Hospital Shirakawa Branch , Nara , Japan
5. Tenri Institute of Medical Research , Nara , Japan
6. Department of Clinical Laboratory Science, Faculty of Health Care, Tenri University , Tenri , Japan
7. Department of Clinical Microbiology, Clinical Laboratory Medicine, Tenri Hospital , Tenri , Japan