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	1.	CA 19-9 in follow-up of patients with colorectal cancer: Should it stay or should it go ? [electronic resource] by Kotzev, Andrey Producer: 20200214 In: Journal of B.U.ON. : official journal of the Balkan Union of Oncology vol. 24 Availability: No items available. Save to lists Add to cart (remove)
	2.	A promising countertraction method for faster adoption of endoscopic submucosal dissection in a Western setting. [electronic resource] by Kotzev, Andrey Iskrenov Producer: 20190204 In: Gastrointestinal endoscopy vol. 89 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Esophageal obstruction after endoscopic variceal ligation. [electronic resource] by Kotzev, Andrey Chernev, Nikolay Producer: 20181219 In: Presse medicale (Paris, France : 1983) vol. 47 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Carbohydrate Antigen 19-9, Carcinoembryonic Antigen, and Carbohydrate Antigen 72-4 in Gastric Cancer: Is the Old Band Still Playing? [electronic resource] by Kotzev, Andrey Iskrenov Draganov, Peter Vassilev Publication details: Gastrointestinal tumors Sep 2018 In: Gastrointestinal tumors vol. 5 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Disturbed Interstitial Pregnancy: A First Case of Successful Treatment Using a Mini-Laparoscopic Approach. [electronic resource] by Tantchev, Latchesar Kotzev, Andrey Yordanov, And Angel Producer: 20191212 In: Medicina (Kaunas, Lithuania) vol. 55 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Practical approach for endoscopic resection of colorectal lesions: when West meets East. [electronic resource] by Kotzev, Andrey I Yang, Dennis Draganov, Peter V Producer: 20180712 In: European journal of gastroenterology & hepatology vol. 30 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	How to master endoscopic submucosal dissection in the USA. [electronic resource] by Kotzev, Andrey Iskrenov Yang, Dennis Draganov, Peter V Producer: 20190507 In: Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society vol. 31 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Endoscopic submucosal dissection for early gastric cancer in the West: the absolute but not final word. [electronic resource] by Yang, Dennis Kotzev, Andrey I Draganov, Peter V Producer: 20190912 In: Gastrointestinal endoscopy vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Sigmoidouterine Fistula in Crohn's Disease: A First Case Report. [electronic resource] by Kotzev, Andrey Tanchev, Lachesar Encheva, Lora Kovachev, Nikolay Betova, Tatyana Producer: 20200320 In: Inflammatory bowel diseases vol. 25 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)