<http://ns.inria.fr/covid19/PMC7245234#title>	<http://purl.org/dc/terms/subject>	"Accessory digestive gland surgery" .
<http://ns.inria.fr/covid19/PMC7245234#title>	<http://purl.org/dc/terms/subject>	"Hepatology" .
<http://ns.inria.fr/covid19/PMC7245234#title>	<http://purl.org/dc/terms/subject>	"Organ transplantation" .