No abstract available
MeSH terms
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Adult
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Aged
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Blood Volume
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Duodenal Ulcer / physiopathology*
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Duodenal Ulcer / surgery
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Enteral Nutrition
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Fluid Therapy
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Hemodynamics
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Humans
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Intraoperative Care / methods*
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Middle Aged
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Postoperative Care / methods*
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Preoperative Care / methods
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Stomach Neoplasms / physiopathology*
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Stomach Neoplasms / surgery