方法：在2001年国家癌症数据库，在美国外科医师学会的指导在719家医院下进行病人治疗评价。
METHODS: in 2001 the National Cancer Data Base, under direction of the American College of Surgeons, conducted a patient care evaluation study in 719 hospitals.
国家癌症研究文献数据库CANCERLINE成立。
CANCERLINE, a national database of published cancer research established.
这些数据结合了瑞典全国家庭癌症数据库，该库注册有1958年以来所有出现的癌症患者。
These data were combined with the Swedish National Family cancer Database which registers all cancer cases that have occurred in Sweden since 1958.
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