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Phase II Study of a Multi center Randomized Controlled Trial to Evaluate Oral Vitamin B12 Treatment for Vitamin B12 Deficiency After Total Gastrectomy in Gastric Cancer Patients Anticancer Research Proximal Gastrectomy Is Associated with Lower Incidence of Anemia and Vitamin B12 Deficiency Compared to Total Gastrectomy in Patients with Upper Gastric Cancer Vitamin and Mineral Supplements after Gastric Bypass or Sleeve Gastrectomy Chelsea and Westminster Hospital NHS Foundation Trust What You Need to Know About Vitamin B12 Duane NP
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