1. Paracelsus: herald of modern toxicology;Borzelleca;Toxicol. Sci.,2000
2. Centocor Dear Health Professional Letter, October 5, 2001.
3. Pfizer Dear Doctor Letter, May 1998.
4. Ultra Health Laboratories, Inc. Press Release, April 4, 2003.
5. (Q)SARs: gatekeepers against risk on chemicals?;Hulzebos;SAR QSAR Environ. Res.,2003