“总体上，我们见证了空气质量的巨大改善。”落砂机南加利福尼亚大学全球健康研究所主任Jonathanm .Samet哲学博士说。
"In general, we've seen tremendous improvement in air quality," says Jonathan M. Samet, MD, director of the Institute for Global Health at the University of Southern California, in Los Angeles.
此研究由全球健康研究中心加拿大大学健康研究所支持。研究者的研究没有任何经济因素参与。
The research was funded by the Canadian Institute of Health Research through the Global Health Research Initiative. The researchers have disclosed no relevant financial relationships.
此研究由全球健康研究中心加拿大大学健康研究所支持。研究者的研究没有任何经济因素参与。
The research was funded by the Canadian Institute of Health Research through the Global Health Research Initiative. The researchers have disclosed no relevant financial relationships.
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