[The Schilling test. Its theoretical background and clinical significance].
D000740:Anemia; D000752:Anemia, Pernicious / Q000175:diagnosis*; D006801:Humans; D012546:Schilling Test; D014805:Vitamin B 12 / Q000097:blood*
D014805:Vitamin B 12
ANEMIA, PERNICIOUS/diagnosis; VITAMIN B 12/blood