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Early life swimming pool exposure and asthma onset in children – a case-control study

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Figure

Fig. 1 Flow-chart of the second OLIN pediatric cohort. Cases were children with physician-diagnosed asthma at either the original survey at age7–8 years or at the follow-ups at 11–12 and 14–15 years
Table 1 Prevalence (%) of demographics and conditions among responders and non-responders in the current case-control study
Table 2 Age at asthma symptom onset among cases
Table 3 Air concentrations of trichloramine at the different swimming pool facilities
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