Addendum to “HCG Found in Tetanus Vaccine”: Examination of Alleged “Ethical Concerns” Based on False Claims by Certain of Our Critics. Vaccine Theory Prac & Res [Internet]. 2020 Jul. 15 [cited 2024 Oct. 11];1(1):27-50. Available from: https://ijvtpr.com/index.php/IJVTPR/article/view/3