Lessons from the implementation of a mixed model HMO.

@article{Bischoff1989LessonsFT,
  title={Lessons from the implementation of a mixed model HMO.},
  author={Hilmar Bischoff and Melody H Martin and B D Nielson},
  journal={GHAA journal},
  year={1989},
  volume={10 1},
  pages={3-8}
}