Insight: Cancer drugs proving worth earlier in testing

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Dr. Michael Weitz, MD, poses in the emergency room at St. John's Health Center in Santa Monica, California, February 13, 2013. Drug makers are finding out much earlier in the testing process whether cancer drugs work and Dr. Weitz, whose lung cancer was quickly eradicated in a Phase 1 trial, is an example of this trend. Picture taken February 13, 2013. REUTERS/Bret Hartman