Helicobacters in Bulgarian children.
Boyanova
L
L
Koumanova
R
R
Jelev
C
C
Petrov
S
S
D000293:Adolescent; D002031:Bulgaria / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005260:Female; D005756:Gastritis / Q000382:microbiology; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori / Q000302:isolation & purification*; D006801:Humans; D008297:Male