A population-based multidisciplinary case-control study conducted in Shanghai, China to investigate the reasons for the extremely low risk of prostate cancer in China
A study designed to assess the burden of prostate cancer in Ghana in order to evaluate how the impact of prostate cancer among West Africans compares to that among African-Americans
A multi-racial methodologic study in the U.S. and China to investigate whether serum levels of hormones reflect intraprostatic androgenicity