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	1.	ED predictors of upper gastrointestinal tract bleeding in patients without hematemesis. [electronic resource] by Witting, Michael D Magder, Laurence Heins, Alan E Mattu, Amal Granja, Carlos A Baumgarten, Mona Producer: 20060713 In: The American journal of emergency medicine vol. 24 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Usefulness and validity of diagnostic nasogastric aspiration in patients without hematemesis. [electronic resource] by Witting, Michael D Magder, Laurence Heins, Alan E Mattu, Amal Granja, Carlos A Baumgarten, Mona Producer: 20040922 In: Annals of emergency medicine vol. 43 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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