@misc{indiciaef38d265e0016,
  title = {Headaches and psychoactive substance use.},
  author = {R S el-Mallakh and H R Kranzler and J R Kamanitz},
  year = {1991},
  doi = {10.1111/j.1526-4610.1991.hed3109584.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1774172/},
  note = {Source identifier: 1774172}
}