1. Centre for Research and Technology Hellas, Chemical Process Engineering Research Institute, Thermi, Greece
2. Aristotle University of Thessaloniki, Department of Chemical Engineering, University Campus, Thessaloniki, Greece
3. National Institute for Health and Welfare (THL), Department of Environmental Health, Kuopio, Finland
4. Scottish Centre for Indoor Air, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
5. Scottish Centre for Indoor Air, Institute of Occupational Medicine, Edinburgh, UK
6. Flemish Institute for Technological Research (VITO), Mol, Belgium