I have 23 years of experience and specialize in the field of pulmonary and critical care medicine, with specific knowledge of air pollution, human clinical studies and nanoparticles. I have published on such topics as the respiratory effects of ozone, respiratory effects of nitrogen dioxide and acid aerosols, and respiratory and cardiovascular effects of nanoparticles. I have testified 10 times on topics such as air pollution from power plants, inhalation injury and worker’ compensation.