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Current role of acid suppressants in <i>Helicobacter pylori<\/i> eradication therapy. Best Pract Res Clin Gastroenterol 15: 413-431, 2001.","DOI":"10.1053\/bega.2001.0188"},{"key":"13","unstructured":"13. Okuda M, Tachikawa T, Maekawa K, Fukuda Y. Transmission route of <i>H.pylori<\/i>. Nihon Rinsho 71: 1339-1345, 2013 (in Japanese, Abstract in English)."},{"key":"14","doi-asserted-by":"crossref","unstructured":"14. Rolle-Kampczyk UE, Fritz U, Lehmann I, Richter M, Herbarth O. Well water - one source of <i>Helicobacter pylori<\/i> colonization. Int J Hyg Environ Health 207: 363-368, 2004.","DOI":"10.1078\/1438-4639-00301"},{"key":"15","doi-asserted-by":"publisher","unstructured":"15. Takashima T, Iwakiri R, Sakata Y, et al. Endoscopic reflux esophagitis and <i>Helicobacter pylori<\/i> infection in young healthy Japanese volunteers. Digestion 86: 55-56, 2012.","DOI":"10.1159\/000338849"},{"key":"16","unstructured":"16. Murakami K, Kamada T, Ishikawa H, et al. An evaluation of the performance of a novel stick-type kit for rapid detection of <i>Helicobacter pylori<\/i> antibodies in urine. Clin Lab 57: 481-487, 2011."},{"key":"17","unstructured":"17. Kusano M, Shimoyama Y, Sugimoto S, et al. Development and evaluation of FSSG: frequency scale for the symptoms of GERD. J Gastroenterol 39: 888-891, 2004."},{"key":"18","unstructured":"18. Komatsu-Tanaka M, Iwakiri R, Fujimoto K, et al. Clinical symptoms of FSSG in gastroesophageal reflux disease are critical for PPI treatment: Japanese multi-centers with 185 patients. Dig Endosc 24: 407-411, 2012."},{"key":"19","doi-asserted-by":"publisher","unstructured":"19. Armstrong D, Bennett JR, Blum AL, et al. The endoscopic assessment of esophagitis: a progress report on observer agreement. 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Comparison of endoscopic findings with symptom assessment systems (FSSG and QUEST) for gastroesophageal reflux disease in Japanese centres. J Gastroenterol Hepatol 24: 633-638, 2009.","DOI":"10.1111\/j.1440-1746.2008.05747.x"},{"key":"27","doi-asserted-by":"publisher","unstructured":"27. Akutagawa K, Iwakiri R, Hara M, et al. Risk factors for low response to proton-pump inhibitor treatment in reflux esophagitis and non-erosive reflux disease evaluated by the frequency scale for the symptoms of gastroesophageal reflux disease. Esophagus 12: 225-232, 2015.","DOI":"10.1007\/s10388-014-0477-x"},{"key":"28","doi-asserted-by":"crossref","unstructured":"28. Kawakubo H, Tanaka Y, Tsuruoka N, et al. Upper gastrointestinal symptoms are more frequent in female than male young healthy Japanese volunteers as evaluated by questionnaire. J Neurogastroenterol Motil 22: 248-253, 2016.","DOI":"10.5056\/jnm15140"},{"key":"29","unstructured":"29. Takeshita R, Sakata Y, Hara M, et al. 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