Minimal change esophagitis: prospective comparison of endoscopic and histological markers between patients with non-erosive reflux disease and normal controls using magnifying endoscopy - Kiesslich, R; Kanzler, S; Vieth, M; Moehler, M; Neidig, J; Thanka, BJ Nadar; Schilling, D; Burg, J; Nafe, B; Neurath, MF; Galle, PR (Dig Dis, 2004)