1. Department of Urology, Toyama City Hospital, Toyama, Toyama 939-8511, Japan
2. Department of Urology, Toyama Rosai Hospital, Uozu, Toyama 937-0042, Japan
3. Department of Internal Medicine, Toyama City Hospital, Toyama, Toyama 939-8511, Japan
4. Department of Radiology, Toyama City Hospital, Toyama, Toyama 939-8511, Japan
5. Department of Pathology, Toyama City Hospital, Toyama, Toyama 939-8511, Japan