RT Journal Article SR Electronic T1 Estonia JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 127 OP 130 DO 10.1136/practneurol-2014-001058 VO 15 IS 2 A1 Kristiina Rannikmäe YR 2015 UL http://pn.bmj.com/content/15/2/127.abstract AB