1. Department of Medical Biology, Akita University Graduate School of Medicine, Akita, Japan;
2. Research Center for Biosignaling, Akita University, Akita, Japan;
3. Medical Educational Center, Jichi Medical University, Tochigi, Japan;
4. Department of Internal Medicine, Division of Rheumatology and Clinical Immunology, Jichi Medical University, Tochigi, Japan;
5. Department of Internal Medicine, Niizashiki Central General Hospital, Saitama, Japan;
6. Department of Urology, Akita University Graduate School of Medicine, Akita, Japan