TY  - RPRT
TI  - Diagnostic testing for chronic daily headache.
AU  - Randolph W Evans
AU  - Stephen D Silberstein
PY  - 2002
DO  - 10.1046/j.1526-4610.2002.02135.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12167151/
ID  - 12167151
ER  -