%0 Journal Article %B Environmental Research Letters %D 2023 %I IOP Publishing %P 111001 %R 10.1088/1748-9326/ad039f %T The International Global Atmospheric Chemistry project comments on the revised WHO air quality guidelines %U https://iopscience.iop.org/article/10.1088/1748-9326/ad039f %V 18 %8 10/2023 %9 Perspective