Fig. 3From: The impact of nasal aspiration with an automatic device on upper and lower respiratory symptoms in wheezing children: a pilot case-control studyFrequency distribution of episode’s duration of a upper, and b lower respiratory symptoms (n of days) among patients using a DuoBaby nebulizer equipped (cases, n = 43) or not equipped (controls; n = 46) with an nasal aspiratorBack to article page