Leonard G. Horowitz
Leonard George Horowitz (born June 20, 1952) is a former dentist, a health industry entrepreneur, and the author of a number of books, pamphlets, DVDs, CDs and articles on public health issues; the books and pamphlets have been published under his own Tetrahedron imprint. Horowitz is an AIDS conspiracy theorist and opposes vaccination. wiki
According to David Gorski he "is a world class conspiracy theorist who has written articles like Big Pharma/Lancet Scam: Vaccine-Autism Link Denied (coauthored with Mike Adams himself!), Watchdog Groups Say Death Toll From Vaccines Amounts to “Genocide” Surgeon General’s Letter in USA Today Assailed, and Emerging Viruses: AIDS & Ebola. Nature, Accident or Intentional? (a credulous interview with Gary Null). His website, Tetrahedron Publishing Group, is replete with similar articles and hawks colloidal silver as well, while his own website bills him as a “Humanitarian, Clinician, Prophet, Scholar and Natural Healer Advances Global Healing.”" 
Resources and articles
- Board of Integrative Medicine Editorial Board, organizational web page, accessed July 22, 2018.