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. 2021 Oct 26;16(4):354–360. doi: 10.4103/atm.atm_559_20

Figure 1.

Figure 1

Environmental data (carbon monoxide, sulfur dioxide, and NO2 related to vehicular and industrial activity) for Riyadh region March–June 2020 source: Saudi Arabia General Authority for Meteorology and Environmental Protection

HHS Vulnerability Disclosure