disease > immunopathology > autoimmune disease > Biermer disease

disease > hemopathy > anemia > megaloblastic anemia > Biermer disease

disease > metabolic disorder > vitamin deficiency > vitamin B12 deficiency > Biermer disease

disease > nutrition disorder > vitamin deficiency > vitamin B12 deficiency > Biermer disease

disease > nutrition disorder > malnutrition > vitamin B12 deficiency > Biermer disease

... > disease > digestive diseases > gastric disease > gastritis > atrophic gastritis > Biermer disease