1. The CUSP method. Agency for Healthcare Research and Quality.https://www.ahrq.gov/hai/cusp/index.html. Created December 2012. Reviewed August 2019. Accessed April 13 2020.
2. US Food and Drug Administration.Content and format of a 510(k) summary. 21 CFR §807.93.https://www.ecfr.gov/cgi-bin/text-idx?SID=f01e6c5457c404da438740663dd0c8d8&mc=true&node=sp21.8.807.e&rgn=div6#se21.8.807_193. Revised December 14 1994. Accessed March 4 2020.
3. Medical applications of 3D printing. US Food and Drug Administration.https://www.fda.gov/medical-devices/3d-printing-medical-devices/medical-applications-3d-printing. Reviewed December 4 2017. Accessed March 4 2020.