1. Center for Disease Control. 2019. Questions about Single-dose/Single-use Vials. Available at: https://www.cdc.gov/injectionsafety/providers/provider_faqs_singlevials.html
2. Center for Disease Control. 2019. Questions about Multi-dose vials. Available at: https://www.cdc.gov/injectionsafety/providers/provider_faqs_multivials.html
3. Inappropriate use of pharmacy bulk packages of iv contrast media increases the risk of infections;Grissinger;P T,2015
4. Institute for Safe Medical Practices. 2012. Inappropriate use of pharmacy bulk packages of IV contrast media increases risk of infections. Available at: https://www.ismp.org/resources/inappropriate-use-pharmacy-bulk-packages-iv-contrast-media-increases-risk-infections
5. Trends in use of medical imaging in US health care systems and in Ontario, Canada, 2000-2016;Smith-Bindman;JAMA,2019