@misc{indiciae539dde466d78,
  title = {Subtypes of panic attacks and ICD-9 classification.},
  author = {W Maier and R Buller and A Sonntag and I Heuser},
  year = {1986},
  doi = {10.1007/bf00381005},
  url = {https://pubmed.ncbi.nlm.nih.gov/3743575/},
  note = {Source identifier: 3743575}
}