Familial selective vitamin B12 malabsorption in three families.
D000749:Anemia, Megaloblastic / Q000235:genetics; D002648:Child; D002675:Child, Preschool; D003241:Consanguinity; D005260:Female; D006801:Humans; D007223:Infant; D008286:Malabsorption Syndromes / Q000235:genetics*; D008297:Male; D011507:Proteinuria / Q000235:genetics*; D014806:Vitamin B 12 Deficiency / Q000235:genetics*