TY  - RPRT
TI  - [Tension headache].
AU  - S Houy-Schäfer
AU  - K-H Grotemeyer
PY  - 2004
DO  - 10.1007/s00482-003-0280-4
UR  - https://pubmed.ncbi.nlm.nih.gov/15067529/
ID  - 15067529
ER  -