1. Thoracic CT Screening Group, Hitachi Medical Center, Japan
2. Department of Pulmonary Medicine, Jichi Medical University, Japan
3. Department of Internal Medicine, Hitachiomiya Saiseikai Hospital, Japan
4. Department of Pulmonary Medicine, Hitachi General Hospital, Japan
5. Department of Medicine, Nikko Memorial Hospital, Japan
6. Department of Pulmonary Surgery, Hitachi General Hospital, Japan
7. Morikawa Clinic, Japan
8. Faculty of Nutrition, University of Kochi, Japan
9. Department of Physical Therapy, Graduate School of Health Science, Akita University, Japan
10. Department of Pulmonary Surgery, National Hospital Organization Ibarakihigashi National Hospital, Japan