1. The Committee of the Japanese Version of the National Institutes of Health Chronic Prostatitis Symptom Index
2. Department of Urology, Sapporo Medical University School of Medicine
3. Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
4. Department of Urology, Cancer Institute Hospital
5. Department of Urology, Jikei University School of Medicine
6. Department of Urology, Faculty of Medical Science, University of Fukui
7. Department of Urology, Faculty of Medicine, The University of Tokyo
8. Department of Urology, University of Yamanashi