TY  - RPRT
TI  - Behavioral headache research: methodologic considerations and research design alternatives.
AU  - Karl G Hursey
AU  - Jeanetta C Rains
AU  - Donald B Penzien
AU  - Justin M Nash
AU  - Robert A Nicholson
PY  - 2005
DO  - 10.1111/j.1526-4610.2005.05098.x
UR  - https://pubmed.ncbi.nlm.nih.gov/15953263/
ID  - 15953263
ER  -