Importance of sub-23 nm particles in traffic environments: Particle number emission factors and extrathoracic deposition doses

Henna Lintusaari, Teemu Lepistö, Sanna Saarikoski, Laura Salo, Ville Silvonen, Luis M.F. Barreira, Minna Aurela, Jussi Hoivala, Lassi Markkula, Jakub Ondracek, Tina Wahle, Michal Vojtisek-Lom, Jan Topinka, Roel P.F. Schins, Pasi Jalava, Hilkka Timonen, Katja M. Kanninen, Topi Rönkkö