1 CentraCare, Interventional Endoscopy Program, St Cloud Hospital, St Cloud, MN; Division of Gastroenterology, Hepatology and Nutrition University of Minnesota, Minneapolis, MN. Electronic address: [email protected].
2 CentraCare, Interventional Endoscopy Program, St Cloud Hospital, St Cloud, MN.
3 Ameos Klinikum University Teaching Hospital, Halberstadt, Germany.; Clínica de Gastroenterología "Prof. Carolina Olano-Gossweiler", Universidad de la República, Uruguay.