Schilling, R. F. Intrinsic factor studies. II. Effect of gastric juice on urinary excretion of radioactivity after oral administration of radioactive vitamin B12. J. Lab. & Clin. Med. 42:860–866 ...

Carmel R. Reassessment of the relative prevalences of antibodies to gastric parietal cell and to intrinsic factor in patients with pernicious anaemia: influence of patient age and race. Clin Exp ...