1. Institute of Hygiene and Environmental Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
2. Institute of Industrial Building and Construction Design, Technical University Carolo Wilhelmina, 38106 Braunschweig, Germany
3. Hermann-Rietschel-Institut, Technical University of Berlin, 10623 Berlin, Germany