Ambient Nonmethane Hydrocarbon Levels Along Colorado's Northern Front Range: Acute and Chronic Health Risks.
McKenzie LM, Blair B, Hughes J, Allshouse WB, Blake NJ, Helmig D, Milmoe P, Halliday H, Blake DR, Adgate JL. Ambient Nonmethane Hydrocarbon Levels Along Colorado's Northern Front Range: Acute and Chronic Health Risks. Environ Sci Technol. 2018 04 17; 52(8):4514-4525.