Vitamin B12 deficiency in patients with upper gastrointestinal symptoms in the Mekong Delta, Vietnam.
v Nguyen
T
T
van Oijen
M G H
MG
Janssen
M J R
MJ
Laheij
R J F
RJ
Jansen
J B M J
JB
van Asten
H
H
D000328:Adult; D005260:Female; D005767:Gastrointestinal Diseases / Q000150:complications* / Q000175:diagnosis; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D014744:Vietnam; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis / Q000453:epidemiology* / Q000382:microbiology