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I Yamada
Post-graduate Medical Education Center, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital
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S Takaki
Department of General Internal Medicine, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital Department of Gastroenterology, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital
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N Mori
Department of Gastroenterology, Hiroshima Red Cross Hospital & Atomic-Bomb Survivors Hospital