2.9: References
- Page ID
- 19723
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Centres for Disease Control and Prevention. (2017). Public Health Image Library (PHIL). Retrieved from: https://phil.cdc.gov/details.aspx?pid=130
Centers for Disease Control and Prevention. (2017). Polio Photos: Photo ID #5578. Retrieved from: https://www.cdc.gov/polio/us/photos.html
Public Health Ontario. (n.d.). Ontario’s Routine Immunization Schedule. Retrieved from: http://www.health.gov.on.ca/en/public/programs/immunization/static/immunization_tool.html