title: Analysis of group data helps identify subtle changes in health, hazard status.
authors: Environmental Medicine Resources (EMR) Inc., Atlanta, Ga.
authors: D L
authors: DL
authors: Barnes
mesh_terms: D004784:Environmental Monitoring; D015386:Hazardous Substances / Q000009:adverse effects*; D006801:Humans; D009784:Occupational Diseases / Q000209:etiology / Q000517:prevention & control*; D016273:Occupational Exposure / Q000009:adverse effects*; D011159:Population Surveillance
chemical_list: D015386:Hazardous Substances