title: Case study: ultrafine particles exposure in apprentice welders.
authors.affiliation: a Institut de recherche en santé publique de l'Université de Mont- réal (IRSPUM), Department of Environmental and Occupational Health, École de santé publique , Université de Montréal , Montréal , Québec , Canada.
authors.forename: Maximilien
authors.initials: M
authors.lastname: Debia
authors.forename: Scott
authors.initials: S
authors.lastname: Weichenthal
authors.forename: André
authors.initials: A
authors.lastname: Dufresne
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D012574:Schools; D014896:Welding / Q000379:methods*
chemical_list: D000395:Air Pollutants, Occupational; D052638:Particulate Matter