Air Quality in California. Linda Weiner, American Lung Association of California; and John Balmes, MD, Professor and Division Chief of Occupational and Environmental Medicine at San Francisco General, volunteer with the American Lung Association.
Air Quality in California. Linda Weiner, American Lung Association of California; and John Balmes, MD, Professor and Division Chief of Occupational and Environmental Medicine at San Francisco General, volunteer with the American Lung Association.