Figure 1From: Determinants and effects of positive surgical margins after prostatectomy on prostate cancer mortality: a population-based study Kaplan Meier curve of the prostate cancer-specific survival among prostate cancer patients after radical prostatectomy according to surgical margin, Geneva Cancer Registry, 1990–2010. No. at risk: Numbers of persons at risk at the beginning of the period of follow-up. NSM: Negative Surgical Margin. PSM: Positive Surgical Margin.Back to article page