Part Fibre Toxicol. 2012 Apr 30;9:12. doi: 10.1186/1743-8977-9-12
http://erj.ersjournals.com/content/early/2015/09/24/13993003.01865-2014.full
Part Fibre Toxicol. 2012 Apr 30;9:12. doi: 10.1186/1743-8977-9-12
http://erj.ersjournals.com/content/early/2015/09/24/13993003.01865-2014.full