@article{yang y2015health,
  title={Oral Health Knowledge of Pregnant Women on Pregnancy Gingivitis
and Children’s Oral Health},
  author={zhong c,m a kn,wong ys,so y,lee pc,yang y},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={39},
  number={2},
  pages={105--108},
  doi = {10.17796/jcpd.39.2.n66w635638w643n7},
  year={2015}
}