PT - JOURNAL ARTICLE AU - Charles Warlow TI - Editor's choice AID - 10.1136/jnnp.2009.197814 DP - 2009 Dec 01 TA - Practical Neurology PG - 311--311 VI - 9 IP - 6 4099 - http://pn.bmj.com/content/9/6/311.short 4100 - http://pn.bmj.com/content/9/6/311.full SO - Pract Neurol2009 Dec 01; 9