_:b57023456	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/ab4b9ee130e5090e4b8af43b75455dcce3ab1834/2> .
_:b57023457	<http://www.w3.org/ns/oa#exact>	"Hazard ratios" .
_:b57023457	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57023456	<http://www.w3.org/ns/oa#hasSelector>	_:b57023457 .