1. Department of Urology; University of Occupational and Environmental Health; Kitakyushu Japan
2. Japanese Research Group for Urinary Tract Infection (JRGU); Japan
3. Department of Urology; School of Medicine; Sapporo Medical University; Sapporo Japan
4. Nagae Prostate-care Clinic; Hamamatsu Japan
5. Department of Public Health; University of Occupational and Environmental Health; Kitakyushu Japan
6. Department of Urology; Hyogo College of Medicine; Nishinomiya Japan
7. Division of Integrated Medical Education; Department of Social/Community Medical and Health Science; Kobe University Graduate School of Medicine; Kobe Japan