@article{seppo kuttila2004of,
  title={Characteristics of Subjects with Secondary Otalgia},
  author={seppo kuttila,marjaana kuttila,yrsa le bell,pentti alanen,jouko suonpää},
  journal={Journal of Oral & Facial Pain and Headache},
  volume={18},
  number={3},
  pages={226--234},
  doi = {10.11607/jofph.18226},
  year={2004}
}