@article{deniz avcı2019rhinosinusitis,
  title={Acute Rhinosinusitis as an Infrequent Cause of Symptomatic Cluster Headache: Report of Seven Cases},
  author={ferhat balgetir,deniz avcı,murat gönen,i˙rem tas¸cı},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={33},
  number={4},
  pages={408--412},
  doi = {10.11607/ofph.2175},
  year={2019}
}