• 2022-06-01
    Vitamin B12
    is necessary for many metabolic processes. Which of the following
    conditions will not cause deficiency ()
    A: Total gastrectomy
    B: Autoimmune destruction of gastric parietal cells
    C: Gastric acid deficiency caused by chronic gastritis
    D: Surgical resection of jejunum
    E: Surgical resection of ileum