I have 25 years of experience and specialize in the field of environmental epidemiology, with specific knowledge of health effects from toxic waste sites, low level radiation, acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) from benzene exposure, and noise and blood pressure. I have published on such topics as health effects of low level radiation, benzene exposure in gasoline and leukemia, and air pollution and health effects. I have testified on benzene exposure in gasoline and leukemia, occupational noise exposure and blood pressure, and health effects from toxic waste sites.