KLK3 and prostate cancer: Similar findings were reported in Finland: the survival rates for prostate cancer remained stable after the introduction of PSA screening (1995–2004 and 2005–2014) for men with higher education levels; however, in the latter period after the introduction of PSA screening (2005–2014), the survival rates increased for men with a lower education level, indicating a narrowing difference in survival rates between the two groups [36].