_:b56407272 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/aa27b604c925d479006c8d4dfb83442a700a01b4/1> . _:b56407273 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56407273 <http://www.w3.org/ns/oa#exact> "refractory shock" . _:b56407272 <http://www.w3.org/ns/oa#hasSelector> _:b56407273 .