TY  - RPRT
TI  - Headache recurrence.
AU  - V Pfaffenrath
PY  - 1996
DO  - 10.1046/j.1468-2982.1996.1604215-4.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8792028/
ID  - 8792028
ER  -