Agricultural Workers' DiseasesAgriculturePesticidesOccupational ExposureRisk FactorsOrganophosphate PoisoningGas PoisoningTransients and MigrantsPhosmetDustCentral AmericaAccidents, OccupationalOccupational DiseasesChlorpyrifosButyrylcholinesteraseOccupational HealthAir Pollutants, OccupationalOccupationsPesticide ResiduesPolandAcetylcholinesteraseCarbamatesCholinesterase InhibitorsInsecticidesIndiaRural PopulationOrganophosphorus CompoundsQuestionnairesWorkers' CompensationSex WorkersPrevalence