1. Sears ME. Chelation: harnessing and enhancing heavy metal detoxification—a review. Sci World J. 2013;2013:219840.
2. Lanigan RS, Yamarik TA. Final report on the safety assessment of EDTA, calcium disodium EDTA, diammonium EDTA, dipotassium EDTA, disodium EDTA, TEA-EDTA, tetrasodium EDTA, tripotassium EDTA, trisodium EDTA, HEDTA, and trisodium HEDTA. Int J Toxicol. 2002;21 Suppl 2:95–142.
3. Nash RA. Metals in medicine. Altern Ther. 2005;11(4):18–25.
4. Munz F, inventor. Assignor to General Anline Works., New York, NY, a corporation of Delaware. Polyamino carboxylic acids and process for making same. US patent 2,130,505. 1938 Sept 20.
5. http://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/ucm113738.htm . Last accessed on Sept 3, 2015.