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. 2014 Oct 8;29:e2014014. doi: 10.5620/eht.e2014014

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Copyright © 2014 The Korean Society of Environmental Health and Toxicology

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Clinical examination (A) 1st experimental season (’06) and (B) 2nd experimental season (’07) by disease specific quality of life questionnaire for adult Korean asthmatics (QLQAKA). Continuation, indoor plant placement during the entire season (April to September); Withdrawal, placement of indoor plants during the former term (April to June) and withdrawal during the latter term (July to September). NS, non-significance.