1. Department of Infection Control Science, Graduate School of Medicine, Osaka City University, Japan
2. Post Graduate Medical Training Center, Osaka City University Hospital, Japan
3. Department of Neurology, Graduate School of Medicine, Osaka City University, Japan
4. Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Japan
5. Department of Respiratory Medicine, Wakakusa-Daiichi Hospital, Japan
6. Department of Clinical Immunology, Graduate School of Medicine, Osaka City University, Japan