Min, Yang Won Prevalence of Extraesophageal Symptoms in Patients With Gastroesophageal Reflux Disease: A Multicenter Questionnaire-based Study in Korea. [electronic resource] - Journal of neurogastroenterology and motility Jan 2014 - 87-93 p. digital Publication Type: Journal Article ISSN: 2093-0879 Standard No.: 10.5056/jnm.2014.20.1.87 doi