Helicobacter pylori infection occurs via close contact with infected individuals in early childhood
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T. Azuma | F. Gejyo | Y. Yamazaki | Yoshiyuki Ito | N. Hashimoto | Y. Ito | M. Kuriyama | Y. Kohli | S. Ito | H. Miyaji | H. Suto | H. Sugimoto | T. Azuma | Y. Abe | H. Sugimoto