1. Graduate School of Medicine, Keio University , Tokyo, Japan
2. Medical Governance Research Institute , Tokyo, Japan
3. Moffitt Cancer Center , Tampa, FL, USA
4. International Medical Support Center, Japanese Red Cross Narita Hospital , Chiba, Japan
5. Division of Infectious Diseases, Department of Internal Medicine, Asahi General Hospital , Chiba, Japan
6. Department of Breast Surgery, Jyoban Hospital of Tokiwa Foundation , Iwaki, Fukushima, Japan
7. Minatomachi Medical Center , Kanagawa, Japan