@article{hirakawa_1967, 
  title={28. Study on Chromosome of Congenital Deformity Patients in Jaw, Facial and Oral Region}, 
  volume={21}, 
  DOI={10.2504/kds.21.201}, 
  publisher={Kyushu Dental Society}, 
  author={Hirakawa}, 
  year={1967}
  }