https://www.inrs.fr/media.html?refINRS=TP%2017 https://www.inrs.fr/dms/inrs/CataloguePapier/DMT/TI-TP-17/tp17.pdf 2013 France French occupational exposure journal article laser therapy smoke respiratory condition due to chemical fumes and vapors, nos papillomavirus infections infection control occupational exposure respiratory tract infections