Peak flow meter isolated on wooden background. Hand medical device used to monitor the breath of a person suffering from bronchial asthma. Peak flow meter wide range of values. Breath test allergy. Lung function testing Poster #139255080
Peak flow meter isolated on wooden background. Hand medical device used to monitor the breath of a person suffering from bronchial asthma. Peak flow meter wide range of values. Breath test allergy. Lung function testing Poster #139255080
