1. Department of Building Science Tsinghua University Beijing China
2. Key Laboratory of Eco‐Planning & Green Building Ministry of Education Tsinghua University Beijing China
3. Department of Disease & Nosocomial infection control Beijing Tsinghua Changgung Hospital Beijing China
4. School of Clinical Medicine Tsinghua University Beijing China
5. Department of radiology Beijing Tsinghua Changgung Hospital Beijing China
6. Peking‐Tsinghua Center for Life Sciences Tsinghua University Beijing China
7. Department of Infection Beijing Tsinghua Changgung Hospital Beijing China