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	1.	Newly developing diverticular disease of the colon in patients undergoing repeated endoscopic evaluation. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20021105 In: Journal of clinical gastroenterology vol. 35 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Changes in prevalence of Helicobacter pylori infection in two groups of patients undergoing endoscopy and living in the same region in the Netherlands. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20040401 In: Scandinavian journal of gastroenterology vol. 38 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Prevalence of gastroesophageal reflux disease in immigrants living in the Zaanstreek region in the Netherlands. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20040923 In: Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus vol. 17 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	The yield of UGIE: a study of a ten-year period in the 'Zaanstreek'. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20030430 In: The Netherlands journal of medicine vol. 61 Availability: No items available. Save to lists Add to cart (remove)
	5.	Diverticular disease of the colon and concomitant abnormalities in patients undergoing endoscopic evaluation of the large bowel. [electronic resource] by Loffeld, R. J. L. F Van Der Putten, A. B. M. M Publication details: Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland May 2002 In: Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland vol. 4 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	The annual yield of diagnostic endoscopy of the lower digestive tract. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Publication details: European journal of internal medicine Feb 2005 In: European journal of internal medicine vol. 16 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Rising incidence of reflux oesophagitis in patients undergoing upper gastrointestinal endoscopy. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20040519 In: Digestion vol. 68 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Newly developing hiatus hernia: a survey in patients undergoing upper gastrointestinal endoscopy. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20020912 In: Journal of gastroenterology and hepatology vol. 17 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Helicobacter pylori and gastro-oesophageal reflux disease: a cross-sectional epidemiological study. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20041123 In: The Netherlands journal of medicine vol. 62 Availability: No items available. Save to lists Add to cart (remove)
	10.	The completion rate of colonoscopy in normal daily practice: factors associated with failure. [electronic resource] by Loffeld, R J L F van der Putten, A B M M Producer: 20100308 In: Digestion vol. 80 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)