fasting and after meals serum gastrin levels were determined in healthy subjects and patients with different gastroenterological diseases ( duodenal and gastric ulcer , hiatal hernia with gastroesophageal reflux , billroth ii gastric resection , atrophic gastritis , zollinger-ellison , menetrier , chronic calcifying pancreatitis , gastric carcinoma and lymphoma ) .
C0013303
duodenal
C0192444
billroth ii