TY  - RPRT
TI  - A young man with a headache.
AU  - E Redfern
AU  - O Warren
PY  - 2005
DO  - 10.1136/emj.2003.010769
UR  - https://pubmed.ncbi.nlm.nih.gov/16046767/
ID  - 16046767
ER  -