Hypertrophy of the masseter muscles.

@article{MAXWELL1951HypertrophyOT,
  title={Hypertrophy of the masseter muscles.},
  author={J H MAXWELL and Robert Waggoner},
  journal={Transactions of the ... annual meeting of the American Laryngological Association. American Laryngological Association. Annual Meeting},
  year={1951},
  volume={53 72nd Meeting},
  pages={193-204}
}