Katharina Hildebrandt , Regina Rückerl , Wolfgang Koenig , Alexandra Schneider , Mike Pitz , Joachim Heinrich , Victor Marder , Mark Frampton , Günter Oberdörster , H Erich Wichmann and Annette Peters
Particle and Fibre Toxicology 2009, 6:25doi:10.1186/1743-8977-6-25