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. 2007 Feb 14;115(7):996–1001. doi: 10.1289/ehp.9888

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Between-group comparisons. Smoothed probability densities by randomized stove group (control, n = 71; intervention, n = 49) during the trial period (June 2003 through December 2004) of (A) 24-hr average PM_2.5; (B) SBP; and (C) DBP. Mean ± SD for each distribution shown in parentheses next to number of repeated measures (n).