Less is more: Virginia's Performance Outcomes Measurement System.

@article{Blank2004LessIM,
  title={Less is more: Virginia's Performance Outcomes Measurement System.},
  author={Michael Hungeling Brian Blank and John R. Koch and Barbara J Burkett},
  journal={Psychiatric services},
  year={2004},
  volume={55 6},
  pages={643-5}
}