Positive expiratory pressure prevents more exacerbations than high frequency chest wall oscillation via a vest in people with cystic fibrosis.

@article{OHerlihy2013PositiveEP,
  title={Positive expiratory pressure prevents more exacerbations than high frequency chest wall oscillation via a vest in people with cystic fibrosis.},
  author={Louella O'Herlihy},
  journal={Journal of physiotherapy},
  year={2013},
  volume={59 4},
  pages={275}
}