1. Internal Medicine, Sakura Hospital, School of Medicine, Toho University.
2. Clinical Pathology, Sakura Hospital, School of Medicine, Toho University.
3. Endocrinological Division, Weihai municipal Hospital.
4. Clinical Functional Physiology Division, Sakura Hospital, School of Medicine, Toho University
5. Japan Labor and Welfare Association.
6. Internal Medicine, Toyama Teishin Hospital.