Analysis of information sources in references of the Wikipedia article "Jeffrey Brent" in English language version.
He [Brent] is one of about 250 board-certified medical toxicologists in the United States, and he has experience in treating children with actual mercury toxicity.
He [Brent] is one of about 250 board-certified medical toxicologists in the United States, and he has experience in treating children with actual mercury toxicity.