1. Aerosols, Dusts, and Metals, Work Environment Development Centre, Finnish Institute of Occupational Health, Helsinki, Finland, , Department of Materials Science, Tampere University of Technology, Tampere, Finland
2. New Technologies and Risks, Work Environment Development Centre, Finnish Institute of Occupational Health, Helsinki, Finland
3. Aerosols, Dusts, and Metals, Work Environment Development Centre, Finnish Institute of Occupational Health, Helsinki, Finland