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On page 737 in the first paragraph of the "Safety" section, the final sentence "Serious adverse events occurred with a slightly lower frequency in the glycopyrronium aboriginal flag beanie treatment group (11%) compared with placebo (13%) and the tiotropium group (15%, Table 3).32,33" should read "Serious adverse events occurred with a slightly lower frequency in the glycopyrronium treatment group (10%) compared with placebo (13%) and mn triton pillar pod the tiotropium group (15%, Table 3).32,33"Read the original article .