Media type: E-Article Title: 553 Small Volume Acid Reflux in GERD Patients With Hiatal Hernia is Only Detectable by pH-Metry but Not by Multichannel Intraluminal Impedance Contributor: Weigt, Jochen; Malfertheiner, Peter imprint: Elsevier BV, 2010 Published in: Gastroenterology Language: English DOI: 10.1016/s0016-5085(10)60348-4 ISSN: 0016-5085 Keywords: Gastroenterology ; Hepatology Origination: Footnote: Access State: Open Access