title: Vitamin B12 deficiency in a 15-year old boy due to mutations in the intrinsic factor gene, GIF.
authors.forename: Ulrik M
authors.initials: UM
authors.lastname: Overgaard
authors.forename: Stephan M
authors.initials: SM
authors.lastname: Tanner
authors.forename: Henrik S
authors.initials: HS
authors.lastname: Birgens
mesh_terms: D000293:Adolescent; D006801:Humans; D007437:Intrinsic Factor / Q000235:genetics*; D008297:Male; D009154:Mutation; D014806:Vitamin B 12 Deficiency / Q000235:genetics*
chemical_list: D007437:Intrinsic Factor
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