The proof is in the data. Findings bolster nurses' stance that RN care makes a difference.

@article{Trossman2009ThePI,
  title={The proof is in the data. Findings bolster nurses' stance that RN care makes a difference.},
  author={Susan Trossman},
  journal={The American nurse},
  year={2009},
  volume={41 4},
  pages={6, 13}
}