1. Hospital of the National Institute of Radiological Sciences; National Institutes for Quantum and Radiological Science and Technology; Chiba Japan
2. Kato Medical Clinic; Tokyo Japan
3. Chiba Rosai Hospital; Chiba Japan
4. Department of Public Health; Dokkyo Medical University; Tochigi Japan
5. Brown University Alpert Medical School; Providence Rhode Island
6. International University of Health and Welfare; Mita Hospital; Tokyo Japan