{"first_sentence": {"type": "/type/text", "value": "Mitral valve prolapse (MVP) is a fairly common medical problem that is the focus of some controversy and even confusion among both physicians and those who suffer from it."}, "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "weight": "1.6 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["McGraw-Hill"], "number_of_pages": 48, "isbn_13": ["9780879837655"], "id": 11017903, "edition_name": "1 edition", "isbn_10": ["0879837659"], "publish_date": "January 11, 1999", "key": "/b/OL8131387M", "authors": [{"key": "/a/OL284480A"}], "title": "Natural Therapies for Mitral Valve Prolapse", "type": {"key": "/type/edition"}, "subjects": ["Diets & dieting", "Health & Fitness", "Consumer Health", "Health/Fitness", "Alternative Therapies", "Cardiology", "Health & Fitness / Alternative Therapies"], "physical_dimensions": "8.3 x 5 x 0.3 inches", "revision": 1}