Recurrence Rate, Risk Factors for the Recurrence, and Quality of Life in Patients With GERD in Korea-an Observational

Inclusion Criteria: * Both ERD or NERD patient who confirmed by EGD findings within 12 months prior to V1 and have a symptom with moderate or more, at least once per week within 1 week prior to V1 and Patients between age 20 and 80with typical reflux symptoms * Among the patient who have not taken PPI or H2 blocker within 4 weeks prior to V1, needs to be prescribed PPIs 4\~8 weeks as a part of the routine clinical practice due to typical symptom * Patients who give the signed informed consent Exclusion Criteria: * Patients with past history of gastrointestinal surgery * Patients with known malignancy or history of such diseases * Patients with moderate to severe general medical conditions like ischemic heart disease, chronic renal failure, congestive heart failure, COPD, liver cirrhosis, acute or chronic pancreatitis, or other medical conditions which the investigator considers