@article{matsukura_1987, 
  title={Digital plethysmogram in atherosclerotic obstructive disease of lower limbs.}, 
  volume={17}, 
  DOI={10.4326/jjcvs.17.146}, 
  publisher={The Japanese Society for Cardiovascular Surgery}, 
  author={Matsukura}, 
  year={1987}
  }