Department of Obstetrics and Gynecology;
Asahikawa Medical University;
Asahikawa;
Hokkaido 078-8510;
Japan;
Department of Urology;
Osaka University Graduate School of Medicine;
Suita 565-0871;
Japan;
Department of Integrated Cancer Therapy and Urology;
Kanazawa University Graduate School of Medical Science;
Kanazawa 920-1192;
Japan;
Division of Community Medicine and Epidemiology;
Department of Health Science;
Asahikawa Medical University;
Asahikawa 078-8510;
Japan;