Particulate Matter Mortality – California Environmental Protection Agency
 Facts about Fine Particle Air Pollution – American Lung Association
 “Even non-smokers are affected by dreaded lung disease” – Dagens Nyheter
 “Dangerous Duo: Ultrafine particles aggravate allergic reactions” – GSF
 “How Ultrafine Particles in Air Pollution may cause Heart Disease” – Science Daily
 Cardiovascular effects of exposure to diesel exhaust – UMEÅ UNIVERSITY MEDICAL DISSERTATION
 EPA Identifies Noise Levels Affecting Health and Welfare – US Environmental Protection Acency (EPA)
 Influence of Negative Air Ions on Drivers – Toyota
 Exposure to Particulate Air Pollution and Risk of Deep Vein Thrombosis – American Medical Association.
 A Controlled Trial of Timed Bright Light and Negative Air Ionization for Treatment of Winter Depression – American Medical Association.
 Ambient Particulate Pollutants in the Ultrafine Range Promote Early Atherosclerosis and Systemic Oxidative Stress – American Heart Association.
 Ultrafine Particles: Characterization, Health Effects and Pathophysiological Mechanisms – US Environmental Protection Agency (EPA)
