1. Department of Respiratory Medicine Tohoku University Hospital Sendai Japan
2. Department of Respiratory Medicine Hirosaki University Hospital Hirosaki Japan
3. Department of Respiratory Medicine Sendai Kosei Hospital Sendai Japan
4. Department of Respiratory Medicine JCHO Hokkaido Hospital Sapporo Japan
5. Department of Thoracic Surgery Omagari Kosei Medical Center Omagari Japan
6. Department of Respiratory Medicine Miyagi Cancer Center Natori Japan
7. Department of Respiratory Medicine Saka General Hospital Shiogama Japan
8. Department of Respiratory Medicine Naha City Hospital Naha Japan
9. Department of Respiratory Medicine Kesennuma City Hospital Kesennuma Japan
10. Department of Palliative Medicine Tohoku University School of Medicine Sendai Japan