The BMJ on Twitter: "Pernicious anaemia is an autoimmune disorder affecting the gastric mucosa with impaired absorption of dietary cobalamin (vitamin B12) resulting in B12 deficiency. How can doctors spot and diagnose
تويتر \ Tony Breu على تويتر: "3/4 - The Explanation We learned in 1959 that B12 is absorbed in the terminal ileum. The study in tweet 2 shows well that B12 is