@article{ETD,
      school = {Certificate in Orthodontics},
      author = {Marshall, Ken},
      url = {http://digitalcollections.ohsu.edu/record/1291},
      title = {An investigation into Ponts index and archwidth changes},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4GX48QQ},
      recid = {1291},
      address = {1987},
}