High Prevalence of Triple-Negative Breast Cancer in Southern Shaanxi Province, China.

1 Although the incidence rate of breast cancer is lower in Asian population compared with other races, there is an increasing trend in China over the past two decades. 2 Environmental pollution is considered to be one of the main causes of breast cancer. 3 Metals are ubiquitous in the environment from natural sources, industry, and fossil fuel combustion. 4 Some metals, including mercury, cadmium, and lead have been judged carc

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