http://www.rst-sante-travail.fr/rst/pages-article/ArticleRST.html?ref=RST.TP%2017 http://www.rst-sante-travail.fr/rst/dms/dmt/ArticleDMT/MiseAuPoint/TI-RST-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