1. Department of General Medicine and Primary Care, Tsukuba Medical Center Hospital, Japan
2. Division of Infectious Diseases, Department of Medicine, Tsukuba Medical Center Hospital, Japan
3. Department of Bacteriology II, National Institute of Infectious Diseases, Japan
4. Miroku Medical Laboratory Inc., Japan
5. Department of Radiology, Tsukuba Medical Center Hospital, Japan
6. Department of Urology, Tsukuba Medical Center Hospital, Japan