1. Bungoono City Hospital; Oita Japan
2. Department of Respiratory Medicine and Infectious Diseases; Oita University Faculty of Medicine; Oita Japan
3. General Clinical Research Center; Oita University Hospital; Oita Japan
4. Department of Infection Control and Prevention; Kobe University Hospital; Kobe Japan
5. Department of Medical Affairs; Otsuka Pharmaceutical Co, Ltd; Tokushima Japan