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Prostate-Specific Antigen Doubling Time as a Surrogate Marker for Evaluation of Oncologic Drugs to Treat Prostate Cancer

With more than 230,000 new cases each year in the United States, prostate cancer is the most common cancer diagnosed among American men [(1)][1] . Prostate cancer is expected to account for nearly 30,000 deaths in the United States in 2004 and consequently represents the second most common cause of