{"first_sentence": {"type": "/type/text", "value": "Antiphospholipid antibodies (aPL) are a heterogeneous family of autoantibodies directed against phospholipid binding plasma proteins."}, "physical_format": "Paperback", "subtitle": "Volume 20 (Recent Advances in Obstetrics & Gynecology)", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "weight": "1.1 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["Churchill Livingstone"], "number_of_pages": 234, "isbn_13": ["9780443060229"], "id": 13685560, "edition_name": "20 edition", "isbn_10": ["0443060223"], "publish_date": "October 12, 1998", "key": "/b/OL10259163M", "authors": [{"key": "/a/OL3256802A"}], "title": "Recent Advances in Obstetrics and Gynaecology", "type": {"key": "/type/edition"}, "subjects": ["Gynaecology & obstetrics", "Medical", "Medical / Nursing", "Gynecology & Obstetrics", "Medical / Gynecology & Obstetrics", "Study guides, home study & revision notes", "General"], "physical_dimensions": "9.1 x 6.1 x 0.6 inches", "revision": 1}