TY - JOUR AU - Hak, N G; Mostafa, M; Salah, T TI - Acid and bile reflux in erosive reflux disease, non-erosive reflux disease and Barrett's esophagus JO - Hepatogastroenterology IS - 82 VL - 55 PY - 2008 SP - 442 EP - 447 N1 - et al. ER -