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Biermer's congenital pernicious anemia Congenital deficiency of intrinsic factor Megaloblastic anemia due to congenital deficiency of intrinsic factor Megaloblastic anemia due to inborn errors of metabolism Myasthenic syndrome due to another disorder Myasthenic syndrome due to pernicious anemia Pernicious anemia Pernicious anemia Pernicious anemia Pernicious anemia due to autoimmune disorder Clinical Classification Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories

This protects them from damage caused by mechanical damage

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Also, avoid rubber-closure vials, as they allow contamination through their hole and from rubber additives