2024 No Exposure to ultrafine particles in children until 18 years of age: A systematic review https://pubmed.ncbi.nlm.nih.gov/31692140/ García-Hernández, Celia Europe Review Students Particulate Matter (PM) Air pollution children Microenvironments Personal exposure Systematic review Ultrafine particles Review of 32 studies examined UFP exposure in children across schools, homes, and transit. Highest levels were linked to traffic, cooking, and cleaning. Findings highlight inconsistent methods and the need for standardized exposure assessment. 2019