[Problems of non-healing stomach ulcers: their classification and treatment].
D005750:Gastric Juice / Q000378:metabolism; D005773:Gastroscopy; D006801:Humans; D013276:Stomach Ulcer / Q000145:classification / Q000628:therapy
Problema dlitel'no ne zazhivaiushchikh iaz zheludka, ikh klassifikatsiia i lechenie.