Absence of luminal intrinsic factor after gastric bypass surgery for morbid obesity

Rapid Charcoal Assay for Intrinsic Factor (IF), Gastric Juice Unsaturated B12 Binding Capacity, Antibody to IF, and Serum Unsaturated B12 Binding Capacity

Chester W. Gottlieb, Kam‐Seng Lau, Louis R. Wasserman et al. · Blood · 1965 · 740 citations · Full text

Immunoassays in the clinical laboratory

Journal of Immunological Methods · 1980 · 128 citations

Autoimmune Disease, Medicine, Immunology +5

Isolation of Gastric Vitamin B12-binding Proteins Using Affinity Chromatography

Robert H. Allen, Carol S. Mehlman · Journal of Biological Chemistry · 1973 · 120 citations · Full text

Nutrition, Gastrointestinal Peptide Hormone, Food Chemistry +19

Late effects of gastric bypass for obesity.

L. V. Crowley, Joseph F. Seay, Gerard E. Mullin · PubMed · 1984 · 119 citations

Obesity, Nutrition, Bariatric Surgery +15

Clinically significant vitamin B12 deficiency secondary to malabsorption of protein-bound vitamin B12

Charles E. King, John Leibach, Phillip P. Toskes · Digestive Diseases and Sciences · 1979 · 116 citations

Vitamin Nutrition, Nutrition, Clinical Nutrition +5