Many studies have reported the prognostic significance of the bone scan index (BSI) for metastatic\ncastration-resistant prostate cancer (mCRPC); however, these reports are controversial. This study investigated the\nBSI in mCRPC and its relationship with prognosis.\nMethods: The PubMed, Cochrane, and Embase databases were searched systematically for relevant articles\npublished before September 1, 2019. Hazard ratios (HRs) were used to investigate the prognostic value.............
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