The disappearance of cobalamin absorption testing: a critical diagnostic loss.
Carmel
Ralph
R
Department of Medicine, New York Methodist Hospital, Brooklyn, NY 11215, USA. rac9001@nyp.org
D006801:Humans; D007408:Intestinal Absorption; D007700:Kinetics; D015203:Reproducibility of Results; D014805:Vitamin B 12 / Q000378:metabolism*; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
D014805:Vitamin B 12