Vitamin B12 Deficiency:NICE Guideline Summary
BMJ 385:q1019, q1262, Sands,T.,et al, 2024
Pellagra
In Brain's Diseases of the Nervous System, 8th Ed. 1977, p 849-851, Oxford University Press., , 1977
The Clinical Behavior of Sprue in the United States
Gastroenterol 38:399, Green,P.A.,et al, 1960