1. Barrett S. Commercial Hair Analysis: A Cardinal Sign of Quackery. Available: http://www.quackwatch.com/ 01QuackeryRelatedTopics/hair.html [cited 10 February 2002].
2. Diagnostic chelation challenge with DMSA: a biomarker of long-term mercury exposure?
3. Lewis R. Metals. In: Occupational & Environmental Medicine (LaDou J ed). 2nd ed. Stamford Connecticut: Appleton & Lange 1997;405-439.
4. Agency for Toxic Substances and Disease Registry;Mercury;Am Fam Physician,1992
5. Parkinson DK. Mercury. In: Environmental and Occupational Medicine (Rom WN ed). 2nd ed. Boston: Little Brown and Company 1992;759-766.