@article{ETD,
      school = {M.S.},
      author = {Nielsen, Christen J.},
      url = {http://digitalcollections.ohsu.edu/record/1552},
      title = {Age related changes in reducible cross links of human  dental pulp collagen},
      publisher = {University of Oregon Health Sciences Center},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4N877ZK},
      recid = {1552},
      address = {1981},
}