Hepatitis B Surface AntigensDustCosmic DustAir Pollutants, OccupationalPyroglyphidaeMitesOccupational ExposureQuartzPneumoconiosisWoodInhalation ExposureByssinosisSilicon DioxideEnvironmental MonitoringAir Pollution, IndoorConstruction MaterialsAllergensFloors and FloorcoveringsTextile IndustryMiningCoalDermatophagoides pteronyssinusArthropod ProteinsAir MicrobiologyHousingSilicosisAgricultural Workers' DiseasesDermatophagoides farinaeFlourEnvironmental ExposureIndustry