title: Studies in occupational epidemiology: the case for international collaboration.
mesh_terms: D004812:Epidemiologic Methods; D004813:Epidemiology; D005060:Europe; D006540:Herbicides; D006801:Humans; D007390:International Agencies; D008175:Lung Neoplasms / Q000139:chemically induced; D008903:Minerals; D009784:Occupational Diseases / Q000139:chemically induced; D009787:Occupational Medicine; D010642:Phenoxyacetates; D013997:Time Factors
chemical_list: D006540:Herbicides; D008903:Minerals; D010642:Phenoxyacetates