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Fig. 1 | BMC Public Health

Fig. 1

From: Characterization of urinary cotinine concentrations among non-smoking adults in smoking and smoke-free homes in the Korean national environmental health survey (KoNEHS) cycle 3 (2015–2017)

Fig. 1

Cumulative frequency of urinary cotinine concentrations in non-smoking adults living in smoking and smoke-free homes. This graph included only the detected urinary sample (n = 621) from 641 samples in smoking home and urinary sample (n = 1810) from 1934 samples in smoke-free homes

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BMC Public Health

ISSN: 1471-2458

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