1. Kasuke I (Ed.). Aldo Castellani Memorial Research (Special issue). Euphoria et Cacophoria. 1982-1983;12:1-161.
2. Morton’s Medical Bibliography. An Annotated Check-list of Texts Illustrating the History of Medicine;Garrison,1991
3. Centers for Disease Control and Prevention, Multiple Vaccinations at Once, https://www.cdc.gov/vaccinesafety/concerns/multiple-vaccines-immunity.html (accessed: 3 June 2021).
4. World Health Organization, Combination vaccines: how and why? Lessons learned, p. 18, https://www.who.int/immunization/research/forums_and_initiatives/1_MWilde_Combination_Vaccines_gvirf16.pdf?ua=1 (accessed: 3 June 2021).
5. Combination Vaccines;Skibinski;J Glob Infect Dis,2011