Associations of long-term exposure to air pollution with blood pressure and homocysteine among adults in Beijing, China: A cross-sectional study

Jing Du, Bing Shao, Yanlin Gao, Zaihua Wei, Yu Zhang, Hong Li, Jing Wang, Yunping Shi, Jianting Su, Qingping Liu, Yang Liu, Ping Wang, Chunyan Xie, Chao Wang, Xinbiao Guo, Gang Li