title: 2-year-old girl with pancytopenia due to vitamin B12 (cobalamin) deficiency.
authors.affiliation: Department of Pediatrics, Keck School of Medicine, Los Angeles County + University of Southern California Medical Center, Los Angeles, California, United States; Department of Medicine, Keck School of Medicine, Los Angeles County + University of Southern California Medical Center, Los Angeles, California, United States.
authors.forename: Cynthia H
authors.initials: CH
authors.lastname: Ho
authors.forename: Michelle
authors.initials: M
authors.lastname: Thomas
authors.forename: Elizabeth
authors.initials: E
authors.lastname: McGuire
authors.forename: Shoji
authors.initials: S
authors.lastname: Yano
mesh_terms: D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010198:Pancytopenia / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D018570:Risk Assessment; D016896:Treatment Outcome; D014805:Vitamin B 12 / Q000627:therapeutic use*; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy*
chemical_list: D014805:Vitamin B 12
keywords: cobalamin deficiency; juvenile megaloblastic anaemia; megaloblastic anaemia 1; pancytopenia; selective vitamin B12 malabsorption with proteinuria; vitamin B12 deficiency