Missouri Treatment Courts – Implementing RNR in a Drug Court Setting: The 4-Track Model in Practice – Outcome and Cost Study Summary Portland, OR: NPC Research September 2018 AuthorsCarey, S. M., Ho, T., Johnson, A. J., Rodi, M., Waller, M. S., & Zil, C. E. Associated FilesReport Associated Staff Shannon M. Carey Timothy Ho Adrian J. Johnson Chad Rodi Mark S. Waller Charlene E. Zilius