[Serum vitamin B 12 levels in patients with chronic gastritis with marked secretory insufficiency].
D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D005745:Gastric Acidity Determination; D005756:Gastritis / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014805:Vitamin B 12 / Q000097:blood*
D014805:Vitamin B 12
Soderzhanie vitamina B 12 krovi bol'nykh khronicheskim gastritom s vyrazhennoĭ sekretornoĭ nedostatochnost'iu.