Article History
First Online: 19 October 2019
Compliance with ethical standards
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: Professor Guido Costamagna is a consultant for Olympus, Cook Medical and Boston Scientific. Dr. Ivo Boškoski is a research grant holder from Apollo Endosurgery and is a consultant for Apollo Endosurgery, Cook Medical and Boston Scientific. Dr Vincenzo Bove and Dr. Camilla Gallo declare that they have no conflicts of interest.