1. U.S. Department of Health and Human Services. Combating Counterfeit Drugs: A Report of the Food and Drug Administration.http://counterfeiting.unicri.it/docs/FDA% 20combating%20ctf%20drugs.pdf(accessed April 2010).
2. Witkowski, M., Batson, J., and Crowe, J.Presented at thePittsburgh Conference, Chicago, IL, March 2007; paper 640-5.
3. Ranieri, N.Presented at thePittsburgh Conference, Chicago, IL, March 2007; paper 640-6.
4. Adar, F., Witkowski, M., and Lee, E.Presented at thePittsburgh Conference, Chicago, IL, March 2007; paper 640-7.