{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7245575#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Surgical procedures and techniques",
          "Medical treatments",
          "Female genital procedures",
          "Surgery",
          "Zoonoses",
          "Occupational safety and health",
          "COVID-19",
          "Digestive system surgery",
          "Viral respiratory tract infections",
          "Endoscopy"] } } }
