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A (3) | C (3) | D (4) | F (2) | G (2) | H (1) | I (2) | L (2) | M (2) | O (1) | P (4) | R (2) | S (2) | U (1) | W (5) | Y (2)

Fine particulate matter, or fine particles

Particulate matter less than or equal to 2.5 µm (micrometers) in aerodynamic diameter (or PM2.5).

Four world regions

Global regions used in the IHME analysis: Asia, Africa, America, and Europe.