American Journal of Obstetrics and Gynecology · 1979 · 30 citations · 17 references
Vitamin NutritionNutritionHormonal ContraceptiveOral ContraceptiveVitamin B12 MetabolismVitamin B ComplexNutritional SciencePublic HealthMetabolismMedicineWomen's Health
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Deficiency of Vitamin B12-Binding Alpha Globulin in Two Brothers
Ralph Carmel, Victor Herbert · Blood · 1969 · 122 citations · Full text
Decreased Serum B12 Levels With Oral Contraceptive Use
Louis F. Wertalik · JAMA · 1972 · 63 citations