1. For information on the Tufts Center for the Study of Drug Development (CSDD), and related reports, see:http://csdd.tufts.edu/.
2. DiMasi, J. A., Grabowski, H. G., and Hansen, R. W.Cost to develop and win marketing approval for a new drug is $2.6 billion.http://csdd.tufts.edu/, November 18, 2014.
3. Pharmacoeconomics and the Medicinal Chemist
4. 2013 Statistics for Global Prescription Medications: CNS Therapeutics Maintain a Leading Position among Small Molecule Therapeutics
5. DiMasi, J. A.CNS drugs take longer to develop and have lower success rates than other drugs.http://csdd.tufts.edu/, November 4, 2014.