Sarvari, H., Chen, Z., Chan, D., Lester, E., Yahaya, N., Nassereddine, H. & Lotfata, A. 2022, 'A global survey of infection control and mitigation measures for combating the transmission of COVID-19 pandemic in buildings under facilities management services', Frontiers in Built Environment, January 2022, 7, article no: 644104. https://doi.org/10.3389/fbuil.2021.644104