@misc{indiciae15ca6fdbd49d,
  title = {Panic attacks: a twin study.},
  author = {G Perna and D Caldirola and C Arancio and L Bellodi},
  year = {1997},
  doi = {10.1016/s0165-1781(97)85177-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/9061805/},
  note = {Source identifier: 9061805}
}