PT - JOURNAL ARTICLE AU - S C Lewis AU - C P Warlow TI - How to spot bias and other potential problems in randomised controlled trials AID - 10.1136/jnnp.2003.025833 DP - 2004 Feb 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 181--187 VI - 75 IP - 2 4099 - http://jnnp.bmj.com/content/75/2/181.short 4100 - http://jnnp.bmj.com/content/75/2/181.full SO - J Neurol Neurosurg Psychiatry2004 Feb 01; 75