Evaluation of the relationship between exposures to environmental contaminants and chemical releases to short-term and long-term health effects including medical and epidemiological analyses.  Exposure data, clinical health outcome and toxicological data are all considered.  USAPHC has conducted these services for deployment and garrison exposure and incident concerns. Since the results are often not definititive due to inherent gaps in data and science, multi-disciplinary groups of experts including other Federal agency and academic experts are consulted.