Cancer registries are a primary source for unbiased population-based case control studies, the end points for cohort studies and clinical trials-- and perhaps most importantly, the beginning point for survival analysis.

• 癌症登记处是一个无偏倚基于人群病例对照研究的原点，群组研究和临床试验的终点－也可能是最重要的生存分析的起点。