little boy blowing to peak metr medical device. doctor examining child`s lungs

adult air asthma blow breathing bronchi bronchial care checkup child clinic consulting device diseases doctor examining exhalation flu health hospital illness indicators kid laryngospasm little lungs measure medical medicine monitoring mouth pathologies patient peakflowmetry pediatric pediatrician people physician pressure pulmonary pyclofluometer respiratory schoolboy sick stethoscope tonsillitis treatment uniform visit woman