• abnormal
intestinal anatomy
• contraindication to oesophagogastroduoenoscopy
• previous bariatric surgery or bowel surgery
• active infection
• anticoagulation therapy
• coagulopathy INR >1.3
• estimated Glomerular Filtration Rate (eGFR) <30
• known portal hypertension
• uncontrolled cardiovascular disease
• lactating or pregnant females
• excess anaesthetic risk
• patients taking aspirin with active ischaemic heart
disease or cerebrovascular disease
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