1. A Second Chance
2. Scientific Evidence Supports Stronger Limits on Ozone
3. Guidotti TL. Testimony of Tee Guidotti (MD, MPH, DABT), representing the American Thoracic Society: Hearing on the Proposed National Ambient Air Quality Standards for Particulate Matter: Subcommittee on Energy and Power, Committee on Energy and Commerce, U.S. House of Representatives. 2012 June 28 [accessed 2016 June 20]. Available from: http://archives.republicans.energycommerce.house.gov/Media/file/Hearings/Energy/20120628/HHRG-112-IF03-WState-GuidottiT-20120628.pdf