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. 2021 May 11;142:116328. doi: 10.1016/j.trac.2021.116328

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Fig. 4 — Schematics of (A) GC-MS analysis of volatiles in breath of infected patients and (B) nasopharyngeal swab specimens by paperspray mass spectrometry. Performance (sensitivities, resolution, dynamic ranges, etc.) depend on specific MS instrument configuration and operation. Refer to cited studies and datasets of Fig. 4.