Al-Ghamdi, Waleed Saeed, et al. “The Effect of Portable Air-Purifiers in Improving Indoor Air Quality in Pediatric Intensive Care Units at Two Tertiary Hospitals in Riyadh, Saudi Arabia”. Journal of Agricultural, Environmental and Veterinary Sciences, vol. 7, no. 1, Mar. 2023, pp. 66-75, https://doi.org/10.26389/AJSRP.G211122.