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Ottonello, A., Savarino, V. & Savarino, E. Non-erosive reflux disease patients are more complex than the sole endoscopy tells us. Clin Oral Invest 17, 1965–1966 (2013). https://doi.org/10.1007/s00784-013-1071-7
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DOI: https://doi.org/10.1007/s00784-013-1071-7