RT Journal Article SR Electronic T1 Traveller’s headache JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 358 OP 361 DO 10.1136/jnnp.2009.194522 VO 9 IS 6 A1 Bernice Knight A1 Sarah Cader A1 Mohammed Awad A1 Ian Sabin A1 Jeffrey Gawler YR 2009 UL http://pn.bmj.com/content/9/6/358.abstract AB