Fig. 1From: Laryngopharyngeal reflux in chronic obstructive pulmonary disease - a multi-centre study[a] Prevalence of LPR in COPD patients. [b] RYAN score in upright and supine position before treatment and after 1-month of proton-pump inhibitor (PPI) treatment in 34 COPD patients. Bars represent the mean ± standard error of meanBack to article page