Pernicious Anaemia
BMJ 369:m1319, Mohamed, M.,et al, 2020
Clinicopath Conf, Pernicious Anema with Autoimmune Gastritis and B12 Deficiency
NEJM 351:1333-1341, Case 30-2004, 2004
Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991