Breath sampling.
D000393:Air Pollutants / Q000032:analysis*; D001944:Breath Tests / Q000295:instrumentation / Q000379:methods*; D002849:Chromatography, Gas / Q000379:methods; D006801:Humans; D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D012119:Respiration
D000393:Air Pollutants; D006846:Hydrocarbons, Halogenated