
Keywords: امپدانس intraluminal چند کاناله; reflux finding score; impedance; endoscopy; DLB; Direct laryngoscopy and bronchoscopy; GERD; Gastroesophageal reflux disease; MII; Multichannel intraluminal impedance; pH-MII; Multichannel intraluminal impedance with pH; PedsQL; Pediatric Quality of Life