Background
Edited by: Ang Li, Chinese Academy of Medical Sciences and Peking Union Medical College, ChinaReviewed by: Jie Song, Xinxiang Medical University, China; Renjie Chen, Fudan University, China; Wei Wei Xing, Academy of Military Medical Sciences, ChinaThis article was submitted to Environmental health and Exposome, a section of the journal Frontiers in Public HealthExposure to PM