TY  - RPRT
TI  - Post-traumatic occipital headache.
AU  - L J BARFORD
PY  - 1963
DO  - 10.1016/s0140-6736(63)91111-5
UR  - https://pubmed.ncbi.nlm.nih.gov/13966653/
ID  - 13966653
ER  -