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			1 | 
		
			
									
						Long-term (17 years) subjective and objective evaluation of the durability of laparoscopic Heller esophagomyotomy in patients with achalasia of the esophagus (90% of follow-up): a real challenge to POEM Enthalten in Surgical endoscopy and other interventional techniques 20.1.2021: 1-10
					
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			2 | 
		
			
									
						Addressing the challenge of health measurement Oberhauser, Cornelia. - München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014
					
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			3 | 
		
			
									
						Addressing the challenge of health measurement Oberhauser, Cornelia, 2014
					
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			4 | 
		
			
									
						Loss to Long-Term Follow-up in Metabolic and Bariatric Surgery: A Challenge to the Evidence Base Enthalten in Obesity surgery Bd. 35, 14.3.2025, Nr. 4, date:4.2025: 1559-1562
					
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			5 | 
		
			
									
						The vertical hip fracture – a treatment challenge. A cohort study with an up to 9 year follow-up of 137 consecutive hips treated with sliding hip screw and antirotation screw Enthalten in BMC musculoskeletal disorders Bd. 13, 13.9.2012, Nr. 1, date:12.2012: 1-6
					
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