@article{DA,
      recid = {6852},
      title = {Pacemaker checkup system},
      number = {DA},
      abstract = {Digital scan of a 35mm slide. Black-and-white image of the  telephone system used to provide remote testing of the  Starr cardiac pacemaker after implantation.},
      url = {http://digitalcollections.ohsu.edu/record/6852},
      doi = {https://doi.org/10.6083/M4SX6BWB},
}