Long-term exposure to air pollution, especially ground-level ozone, is like smoking about a pack of cigarettes a day for many years, a new study says, and like smoking, it can can lead to emphysema.
원문출처 : https://www.cnn.com/2019/08/14/health/air-pollution-emphysema-study-climate-scn/index.html
원문출처 : https://www.cnn.com/2019/08/14/health/air-pollution-emphysema-study-climate-scn/index.html