... nutri-tional deficiency. In some instances, an insufficient supply of iron may contribute to the development of iron deficiency. The consumption of an iron-deficient diet, such as occurs in strict ... this study. The presence of dyspeptic com-plaint and its severity calculated by presence of ab -dominal pain, abdominal pain with hungry and an -xiety, abdominal distension, nausea, vomiting, ... history, and certain laboratory data may guide the choice of which endoscopic in -vestigation to perform first in patients with IDA, the- reby, potentially reducing the frequency of negative Int....