<http://ns.inria.fr/covid19/PMC7184418#body_text>	<http://purl.org/dc/terms/subject>	"Occupational safety and health" .
<http://ns.inria.fr/covid19/PMC7184418#body_text>	<http://purl.org/dc/terms/subject>	"Occupational Safety and Health Administration" .
<http://ns.inria.fr/covid19/PMC7184418#body_text>	<http://purl.org/dc/terms/subject>	"Schools in Santiago Metropolitan Region" .
<http://ns.inria.fr/covid19/PMC7184418#body_text>	<http://purl.org/dc/terms/subject>	"Review journals" .