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Proportions of children above (>100 µg/m3 for ≥5.3 hours/day) and below (>100 µg/m3 for <5.3 hours/day) the median level of exposure to particulate matter less than or equal to 2.5 µm in diameter who had not yet experienced an acute lower respiratory infection (ALRI) through 2 years of age in the Mirpur Birth Cohort (n = 257), Dhaka, Bangladesh, 2008–2011.
