@article{elena p. calandre2024of,
  title={Comorbidity of migraine and fibromyalgia in patients with cluster headache: psychological burden and healthcare resource utilization. A cross-sectional study},
  author={elena p. calandre,jorge l. ordoñez-carrasco,mahmoud slim,fernando rico-villademoros,juan m. garcia-leiva},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={38},
  number={1},
  pages={32--39},
  doi = {10.22514/jofph.2024.004},
  year={2024}
}