Polyvinyl ChloridePolyvinyl AlcoholPolyvinylsPlasticizersVinyl ChlorideDiethylhexyl PhthalatePhthalic AcidsFood PackagingPolyurethanesVinyl CompoundsChloridesPlasticsSurgical EquipmentStearatesDrug PackagingChemical IndustryPneumoconiosisSilicone ElastomersDibutyl PhthalateBiofilmsIntubation, IntratrachealChloride ChannelsPovidoneAir Pollutants, OccupationalOccupational DiseasesMicroscopy, Electron, ScanningOccupational Exposure