1. 1nd Department of Medicine, Dokkyo University School of Medicine
2. 2nd Department of Medicine, Kyorin University School of Medicine
3. 2nd Department of Medicine, St. Marianna University School of Medicine
4. Department of Medicine, Kitasato University School of Medicine
5. 2nd Department of Medicine, Saitama Medical School
6. 2nd Department of Internal Medicine, Teikyo University School of Medicine