1. Department of Endocrinology and Metabolism, Nagaoka Red Cross Hospital, Japan
2. Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Japan
3. Department of Infectious Disease, Nagaoka Red Cross Hospital, Japan
4. Department of Respiratory Medicine, Nagaoka Red Cross Hospital, Japan
5. Department of Hematology, Nagaoka Red Cross Hospital, Japan
6. Center of Diabetes, Endocrinology and Metabolism, Joetsu General Hospital, Japan