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