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PDF Estimating the Impact of New Clinical Trial Proven Cancer Therapy and Cancer Chemoprevention... Unger et al. J Clin Oncol.2003; 21: 246s-252s To view this item, select one of the options below: Sign In User Name Sign in without cookies. Can't get past this page? Help with Cookies. Need to Activate? Password Remember my user name & password. Forgot your user name or password? Login via Athens or your institution Sign Up Subscribe to the Journal - Subscribe to the print and/or online journal. Order Online - Purchase your subscription online. [regain access to your recent online order] Renew Online - Renew your subscription online. [regain access to your recent online renewal] Purchase JCO Legacy Archive - [More Information] [regain access to your recent online Legacy Archive order]

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