{"title": "Echocardiology", "covers": [4891811, 4396720], "subjects": ["Echocardiography", "Heart", "Congresses", "Diseases", "Diagnosis", "Cardiology"], "key": "/works/OL18945252W", "type": {"key": "/type/work"}, "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL3191836A"}}], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2019-02-18T08:02:25.199941"}, "last_modified": {"type": "/type/datetime", "value": "2025-04-04T23:13:42.498339"}}