1. Department of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Japan
2. Graduate School of Medical Safety Management, Jikei University of Health Care Sciences, Osaka, Japan
3. Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
4. Kitada Respiratory Clinic, Yao, Japan
5. Tokushima Prefecture Naruto Hospital, Tokushima, Japan