TY  - RPRT
TI  - Headache as a problem for the general practitioner.
AU  - A P FRIEDMAN
PY  - 1961
DO  - 10.1016/s0025-7125(16)33813-5
UR  - https://pubmed.ncbi.nlm.nih.gov/13895233/
ID  - 13895233
ER  -