National Institute of Diabetes and Digestive and Kidney Diseases | |
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Helicobacter pylori-negative gastritis: Prevalence and risk factors | Acute and chronic gastritis due to Helicobacter pylori |
Centers for Disease Control and Prevention.
Centers for Disease Control and Prevention | National Institute of Diabetes and Digestive and Kidney Diseases |
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In: Ferri's Clinical Advisor 2017 | Travelers' health: Food and water safety |
Acute viral gastroenteritis in adults.
21.