| http://www.w3.org/ns/prov#value | - Further, there is a need for an effective endotracheal tube cleaning apparatus which can be easily and effectively introduced into the endotracheal tube, and which can be easily removed, even though it effectively removes solid secretion buildup, due to its friction minimizing engagement with the interior wall surface of the endotracheal tube and/or because of its alleviation of negative pressure/
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