Guillain-Barré syndrome
Table:
Guillain–Barré syndrome
Other names	Guillain–Barré–Strohl syndrome, Landry's paralysis, postinfectious polyneuritis[1]
File:Spirodoc FVC.jpg
A handheld spirometry device, which can be used to anticipate breathing complications of Guillain–Barré syndrome
Pronunciation

UK: /ˈɡiːjæ̃ ˈbæreɪ/
US: /ɡiˈjæn bəˈreɪ/
French: [ɡilɛ̃ baʁe]

Specialty	Neurology
Symptoms	Muscle weakness beginning in the feet and hands[2]
Complications	Breathing difficulties, heart and blood pressure problems[1][2]
Usual onset	Rapid (hours to weeks)[2]
Causes	Unknown[2]
Diagnostic method	Based on symptoms, nerve conduction studies, lumbar puncture[2]
Treatment	Supportive care, intravenous immunoglobulin, plasmapheresis
Prognosis	Weeks to years for recovery[2]
Frequency	2 per 100,000 people per year[2][3]
Deaths	7.5% of those affected[1]

Based on the table, determine whether the statement is entailed, neutral, or refuted. Output only the JSON object {"answer": "YOUR ANSWER"}.

Sentence: Guillain–Barré syndrome has known causes.

answer: refuted