TY  - RPRT
TI  - Cervicogenic headache a critical view on pathogenesis.
AU  - O Sjaastad
AU  - R Salvesen
AU  - J Jansen
AU  - T A Fredriksen
UR  - https://pubmed.ncbi.nlm.nih.gov/9584876/
ID  - 9584876
ER  -