Food and Drug Administration 21 CFR Part 878 [Docket No. FDA�2013�N�0461] (2014): https://www.federalregister.gov/articles/2014/06/02/2014-12546/general-and-plastic-surgery-devices-reclassification-of-ultraviolet-lamps-for-tanning-henceforth-to; 
CFR - Code of Federal Regulations Title 21 (2016) http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=1040.20