title: Microextraction techniques in breath biomarker analysis.
authors: Wolfram
authors: W
authors: Miekisch
authors: Phillip
authors: P
authors: Trefz
authors: Andreas
authors: A
authors: Bergmann
authors: Jochen K
authors: JK
authors: Schubert
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000032:analysis; D001944:Breath Tests / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D009339:Needles; D052617:Solid Phase Microextraction; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D015415:Biomarkers; D055549:Volatile Organic Compounds