@article{DA,
      recid = {4613},
      title = {Retractor},
      number = {DA},
      abstract = {Digital photograph of a blunt, three-pronged steel  retractor, set on a gray counter. A ruler has been placed  beside it for size comparison.},
      url = {http://digitalcollections.ohsu.edu/record/4613},
      doi = {https://doi.org/10.6083/M4251GJH},
}