TY  - RPRT
TI  - Biofeedback and headache.
AU  - S Diamond
PY  - 1979
DO  - 10.1111/j.1526-4610.1979.hed1903180.x
UR  - https://pubmed.ncbi.nlm.nih.gov/457408/
ID  - 457408
ER  -