@article{ramirez-yañez g o2014muscular,
  title={Electromyographic Muscular Activity Improvement in Class II
Patients Treated with the Pre-Orthodontic Trainer},
  author={satygo e a,silin a v,ramirez-yañez g o},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={38},
  number={4},
  pages={380--384},
  doi = {10.17796/jcpd.38.4.2vh1603n62878673},
  year={2014}
}