1. Stephan C, Jung K, Lein M et al (2000) Molecular forms of prostate-specific antigen and human kallikrein 2 as promising tools for early diagnosis of prostate cancer. Cancer Epidem Biomarker Prev 9:1133–1147
2. Heidenreich A, Bastian PJ, Bellmunt J et al (2012) Guidelines on prostate cancer. In: European association of urology guidelines, 2012 edn. Eur Assoc Urol, p 16
3. Stancik I, Luftenegger W, Klimpfinger M, Muller MM, Hoeltl W (2004) Effect of NIH-IV prostatitis on free and free-to-total PSA. Eur Urol 46:760–764
4. Tan JK, Png DJC, Liew LCH, Li MK, Wong ML (2002) Prevalence of prostatitis-like symptoms in Singapore: a population-based study. Singap Med J 43(4):189–193
5. Nickel JC (2000) Prostatitis: lessons from the 20th century. BJU Int 85(2):179–184