@article{ronald s brown2009radiographic,
  title={Panoramic Radiographic Representation of Progressive Periodontal Destruction in a Family with Six Affected Papillon-Lefèvre Siblings.},
  author={khaled a abdel ghaffar,camille rose-nelson,alison glascoe,ronald s brown},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={34},
  number={1},
  pages={61--66},
  doi = {10.17796/jcpd.34.1.jk4r238521227342},
  year={2009}
}