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Figure 2 | BMC Pulmonary Medicine

Figure 2

From: Particular characteristics of allergic symptoms in tropical environments: follow up to 24 months in the FRAAT birth cohort study

Figure 2

Flow-chart of data collection and response rates during the first 24 months in the FRAAT study. Responses rates (left boxes) are shown as a percentage, relative to the total number of screened mothers during recruitment and to the baseline sample size before and during follow up. Exclusion criteria, applied during recruitment, and drop-out causes (right boxes) are also detailed.

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