@article{DA, recid = {7038}, title = {X-ray of heart valves, pre- and post-operation}, number = {DA}, abstract = {Black and white photograph of an x-ray showing the location of three heart-valves in a patient, pre-operative and post-operative views.}, url = {http://digitalcollections.ohsu.edu/record/7038}, doi = {https://doi.org/10.6083/M4N878GQ}, }