About the Authors
Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
Norwegian Institute for Air Research, Kjeller, Norway
Department of Building Science, School of Architecture, Tsinghua University, Beijing, China
Primary Care Research Unit, County Council of Varmland, Karlstad, Sweden
Public Health Sciences, Karlstad University, Karlstad, Sweden
SP Technical Research Institute of Sweden, Boras, Sweden
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JS CGB. Performed the experiments: NS JS MH. Analyzed the data: HC JS. Contributed reagents/materials/analysis tools: NS MH JS. Wrote the paper: HC NS MH CGB.