Relationship between extralaryngeal endoscopic findings, proton pump inhibitor (PPI) response, and pH measures in suspected laryngopharyngeal reflux. - Agrawal, N; Yadlapati, R; Shabeeb, N; Price, C PE; Lidder, A; Shintani-Smith, S; Bové, M; Pandolfino, J; Tan, B (Diseases of the Esophagus, 2019)