1. Edward Jenner and the History of Smallpox Vaccination;Riedel;Baylor University Medical Center Proceedings,2005
2. http://www.cdc.gov/vaccines/acip/committee/guidance/economic-studies.html.
3. A report released by the US Institute of Medicine May 20;Identifying and Prioritizing New Preventive Vaccines for Development,2013
4. Cost Effectiveness in Health and Medicine;Gold,1996
5. Cost-benefit analysis, concepts and practice;Boardman,2006