[Serum levels and intestinal absorption of vitamin B-12 in patients with chronic gastritis].
D045728:Corrinoids; D005756:Gastritis; D006801:Humans; D007408:Intestinal Absorption; D014805:Vitamin B 12; D014803:Vitamin B Complex; D014815:Vitamins
D045728:Corrinoids; D014815:Vitamins; D014803:Vitamin B Complex; D014805:Vitamin B 12
GASTRITIS; VITAMIN B 12