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	1.	Pneumatic dilation for achalasia: in- or outpatient? [electronic resource] by Greer, A J Ching, C K Producer: 19910821 In: Gastrointestinal endoscopy vol. 37 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Metachronous biliary tract cancers in a patient with von Recklinghausen's disease. [electronic resource] by Ching, C K Greer, A J Producer: 19930729 In: The American journal of gastroenterology vol. 88 Availability: No items available. Save to lists Add to cart (remove)
	3.	Is fluoroscopy mandatory for achalasia dilation? [electronic resource] by Greer, A J Ching, C K Producer: 19911107 In: Gastrointestinal endoscopy vol. 37 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Upper gastrointestinal endoscopy in high risk patients under conscious sedation: is intensive monitoring necessary? [electronic resource] by Ching, C K Greer, A J Hill, R C Smith, N Holmes, G K Producer: 19920427 In: The American journal of gastroenterology vol. 87 Availability: No items available. Save to lists Add to cart (remove)

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