PT - JOURNAL ARTICLE AU - T Müller AU - D Woitalla AU - W Kuhn TI - Benefit of folic acid supplementation in parkinsonian patients treated with levodopa AID - 10.1136/jnnp.74.4.549 DP - 2003 Apr 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 549--549 VI - 74 IP - 4 4099 - http://jnnp.bmj.com/content/74/4/549.1.short 4100 - http://jnnp.bmj.com/content/74/4/549.1.full SO - J Neurol Neurosurg Psychiatry2003 Apr 01; 74