When the WBB is useful, and when it isn't.

@article{Stoffregen2014WhenTW,
  title={When the WBB is useful, and when it isn't.},
  author={Thomas A. Stoffregen and Beno{\^i}t G. Bardy},
  journal={Gait & posture},
  year={2014},
  volume={39 4},
  pages={1154; discussion 1158-61}
}