TY  - RPRT
TI  - Headaches and psychoactive substance use.
AU  - R S el-Mallakh
AU  - H R Kranzler
AU  - J R Kamanitz
PY  - 1991
DO  - 10.1111/j.1526-4610.1991.hed3109584.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1774172/
ID  - 1774172
ER  -