1. 2004 http://www.fda.gov/oc/initiatives/criticalpath/whitepaper.html
2. Guidance for Industry: Fast Track Drug Development Programs-Designation, Development, and Application Review 2006 http://www.fda.gov/cber/gdlns/fsttrk.pdf
3. Regulating biopharmaceuticals under CDE versus CBER: an insider's perspective;Schwieterman;Drug Discov Today,2006
4. Chemcials Testing Guidelines. Section 4: Health Effects http://www.oecd.org/document/55/0,2340,en_2649_34377_2349687_1_1_1_1,00.html
5. How many drug targets are there?;Overington;Nat Rev Drug Discov,2006