Zarkin GA, Dunlap LJ, Hicks KA, Mamo D. Benefits and costs of methadone treatment: results from a lifetime simulation model. Health Econ. 2005 Nov 1;14(11):1133-50.
Mauskopf JA, Earnshaw SR, Mullins C. Budget impact analysis: review of the state of the art. Expert Rev Pharmacoecon Outcomes Res. 2005 Feb;5(1):65-79.