Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news published by the U.S. National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services. EHP's mission is to serve as a forum for the discussion of the interrelationships between the environment and human health by publishing in a balanced and objective manner the best peer-reviewed research and most current and credible news of the field. With an impact factor of 6.09, EHP is the top monthly journal in public, environmental, and occupational health and the third-ranked monthly journal in environmental sciences.