_:b56947344	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/18b6e832d861acc5faf925232ea60fe37f872569/8> .
_:b56947344	<http://www.w3.org/ns/oa#hasSelector>	_:b56947345 .
_:b56947345	<http://www.w3.org/ns/oa#exact>	"Publication bias" .
_:b56947345	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .