Margaret H. Whittaker, Ph.D., M.P.H., D.A.B.T.
President and Chief Toxicologist
ToxServices LLC

1326 18th Street, N.W., Suite 22
Washington, D.C. 20036
Tel:  202-429-8787
Fax: 202-429-8788
E-mail: mwhittaker@toxservices.com