Polyvinyl ChloridePolyvinyl AlcoholPolyvinylsPlasticizersVinyl ChlorideDiethylhexyl PhthalatePhthalic AcidsFood PackagingPolyurethanesVinyl CompoundsChloridesPlasticsSurgical EquipmentStearatesDrug PackagingChemical IndustryPneumoconiosisSilicone ElastomersDibutyl PhthalateBiofilmsIntubation, IntratrachealChloride ChannelsAir Pollutants, OccupationalPovidoneMicroscopy, Electron, ScanningOccupational ExposureOccupational Diseases