@article{ETD,
      school = {Certificate in Orthodontics},
      author = {Massar, Frederick J.},
      url = {http://digitalcollections.ohsu.edu/record/1720},
      title = {Histologic response of human periodontal ligament to tooth  movement forces subsequent to initial tooth movement  reaction},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4XS5SMM},
      recid = {1720},
      address = {1977},
}