References
- Agency for Toxic Substances and Disease Registry (ATSDR), United States Department of Health and Human Services . ATSDR Public Health Statements Available: http://www.atsdr.cdc.gov/phshome.html(15 Jul 2003)
- Center for Drug Evaluation and Research, United States Food and Drug Administration . National Drug Code Directory Available: http://www.fda.gov/cder/ndc/database/default.htm(15 Jul 2003)
- Association for Hospital Medical Education . Transitional Year Program Directory Available: http://www.ahme.org/publications/transitional.html(15 Jul 2003)