Abstract

In the article beginning on page 551 in the April 2022 issue, overlapping bars appear in figure 3. The corrected figure appears below.The figure 3 legend is also being updated to avoid redundancy. Instead of “Forest plot in predefined subgroups. Forest plot assessing the effect of penehyclidine inhalation versus placebo inhalation in predefined subgroups. ...,” the legend is being updated to “Forest plot assessing the effect of penehyclidine inhalation versus placebo inhalation in predefined subgroups. ...”The publisher regrets the errors in the figure. The online version and PDF of the article have been corrected.

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