Table 1 Exclusion criteria in this study

Significant weight loss

Gastrointestinal bleeding

 Hematemesis

 Melena

Dysphagia

Intractable vomiting

Palpable abdominal mass

History of documented

 Peptic ulcer

 Gastric cancer

 Gastric surgery

Symptoms compatible with irritable bowel syndrome

Hepatobiliary tract disease

Severe concomitant medical conditions

Pregnant woman

Continuous usage of NSAID^a in the preceding 1 month before entry to the study