[Approximately annual periodicity of Helicobacter pylori prevalence].
Raschka
C
C
Schorr
W
W
Koch
H J
HJ
D005858:Germany / Q000453:epidemiology; D016481:Helicobacter Infections / Q000453:epidemiology*; D016480:Helicobacter pylori; D006801:Humans; D010507:Periodicity; D015995:Prevalence; D012621:Seasons