{"first_sentence": {"type": "/type/text", "value": "Significance: Severe burning pain accompanied by redness and warmth that involves the feet is characteristic of erythromelalgia, an unusual disorder occasionally associated with various myeloproliferative disorders."}, "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "weight": "5 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Lippincott Williams & Wilkins"], "number_of_pages": 136, "isbn_13": ["9781405104319"], "id": 11374129, "edition_name": "1 edition", "isbn_10": ["1405104317"], "publish_date": "August 1, 2003", "key": "/b/OL8404894M", "authors": [{"key": "/a/OL2956196A"}], "title": "Pocket Guide of 50 Unusual Symptoms", "type": {"key": "/type/edition"}, "subjects": ["Medical diagnosis", "Medical / Nursing", "Medical", "Diagnosis", "Health Care Delivery", "Medical / Test Preparation & Review"], "physical_dimensions": "7.8 x 4.4 x 0.4 inches", "revision": 1}