[Advances in epidemiologic study in Helicobacter pylori infection].
Zhang
J Z
JZ
Chen
J J
JJ
D004269:DNA, Bacterial / Q000032:analysis; D016481:Helicobacter Infections / Q000453:epidemiology* / Q000635:transmission; D016480:Helicobacter pylori / Q000235:genetics / Q000302:isolation & purification*; D006801:Humans; D016133:Polymerase Chain Reaction
D004269:DNA, Bacterial