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Figure 1 | Respiratory Research

Figure 1

From: COPD symptoms in the morning: impact, evaluation and management

Figure 1

Time when COPD symptoms are worse than usual as reported by patients. *p < 0.001 versus midday, afternoon, evening, night and difficult to say group; p = 0.006 versus no particular time of the day; p < 0.001 versus midday. Copyright © 2009, Informa Healthcare. Reproduced with permission of Informa Healthcare [3].

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