Media type: E-Article Title: Validation of a Four-Graded Scale for Severity of Heartburn in Patients with Symptoms of Gastroesophageal Reflux Disease Contributor: Junghard, Ola; Wiklund, Ingela imprint: Elsevier BV, 2008 Published in: Value in Health Language: English DOI: 10.1111/j.1524-4733.2007.00313.x ISSN: 1098-3015 Keywords: Public Health, Environmental and Occupational Health ; Health Policy Origination: Footnote: Access State: Open Access