1. Medical Governance Research Institute Tokyo Japan
2. Department of Gastroenterology Sendai Kousei Hospital Sendai Miyagi Japan
3. Department of Breast Surgery Jyoban Hospital of Tokiwa Foundation Iwaki Fukushima Japan
4. Department of Neurosurgery Minamisoma Municipal General Hospital Minamisoma Fukushima Japan
5. Department of Internal Medicine Navitas Clinic Tachikawa, Tokyo Japan