TY  - RPRT
TI  - Headaches and cervical manipulation.
AU  - M Farrell
PY  - 1980
DO  - 10.5694/j.1326-5377.1980.tb134584.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7360070/
ID  - 7360070
ER  -