I have 21 years of experience, and specialize in the field of pulmonary diseases with specific knowledge in the areas of occupational lung injury, lung cancer and mesothelioma. I have published on such topics as chronic obstructive pulmonary disease, lung cancer and mesothelioma. I have testified 99 times on topics such as asbestosis, asbestos-related cancer, mesothelioma, silicosis and occupational asthma.