1. Department of Environmental HealthFukui Medical University School of Medicine
2. Radiation Effects Research Foundation
3. Rosai Hospital for Silicosis
4. Department of RadiologySt. Marianna University School of Medicine
5. Department of RadiologyNational Kinki Chuo Hospital for Chest Diseases
6. Division of Advanced Technology for Medical ImagingNational Institute of Radiological Science
7. Sapporo Railway Hospital