{HEAD ~ Two weaknesses} of current antiandrogens are blamed for {TAIL ~ the failure} to prevent prostate cancer progression from the hormone sensitive stage to the hormone refractory disease and to effectively treat hormone refractory prostate cancer 
{ HEAD ~ Two weaknesses } of current antiandrogens are blamed for { TAIL ~ the failure } to prevent prostate cancer progression from the hormone sensitive stage to the hormone refractory disease and to effectively treat hormone refractory prostate cancer
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