American Academy of Environmental Medicine — Promotes Optimum Health Through Prevention and Safe and Effective Treatments
http://www.aaemonline.org

Agency for Toxic Substances & Disease Registry — Lead Toxicity: What Are Possible Health Effects from Lead Exposure?
https://www.atsdr.cdc.gov/csem/csem.asp?csem=34&po=10

The Biosanctuary — Award-winning biological medicine model that has literally saved lives. It will take you to the next level of health and vitality
http://thebiosanctuary.com/