TY  - RPRT
TI  - Sinus headache: a clinical conundrum.
AU  - Roger K Cady
AU  - Curtis P Schreiber
PY  - 2004
DO  - 10.1016/s0030-6665(03)00181-6
UR  - https://pubmed.ncbi.nlm.nih.gov/15064062/
ID  - 15064062
ER  -