PT - JOURNAL ARTICLE ED - , TI - Clarifications AID - 10.1136/practneurol-2013-000802 DP - 2015 Feb 01 TA - Practical Neurology PG - e1--e1 VI - 15 IP - 1 4099 - http://pn.bmj.com/content/15/1/e1.1.short 4100 - http://pn.bmj.com/content/15/1/e1.1.full SO - Pract Neurol2015 Feb 01; 15