Long-term follow-up of subjects with superficial gastritis or a normal gastric mucosa.
D001706:Biopsy; D002277:Carcinoma / Q000209:etiology; D005500:Follow-Up Studies; D005753:Gastric Mucosa / Q000473:pathology* / Q000502:physiology*; D005756:Gastritis / Q000473:pathology*; D006801:Humans; D013274:Stomach Neoplasms / Q000209:etiology; D013997:Time Factors