TY  - RPRT
TI  - Cranial electrostimulation for headache: meta-analysis.
AU  - D C McCrory
PY  - 1997
DO  - 10.1097/00005053-199712000-00009
UR  - https://pubmed.ncbi.nlm.nih.gov/9442190/
ID  - 9442190
ER  -