Dumonceau JM, Delhaye M, Tringali A, Arvanitakis M, Sanchez-Yague A, Vaysse T, Aithal GP, Anderloni A, Bruno M, Cantú P, Devière J, Domínguez-Muñoz JE, Lekkerkerker S, Poley JW, Ramchandani M, Reddy N, van Hooft JE. Gedyt Endoscopy Center, Buenos Aires, Argentina. Department of Gastroenterology Hepatopancreatology, and Digestive Oncology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium. Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli, IRCCS, Rome, Italy. Centre for Endoscopic Research, Therapeutics and Training (CERTT), Università Cattolica del Sacro Cuore, Rome, Italy. Gastroenterology and Hepatology, Hospital Costa del Sol, Marbella, Spain. Service de Gastroentérologie, University Hospital of Bicêtre, Assistance Publique-Hopitaux de Paris, Université Paris Sud, Le Kremlin Bicêtre, France. Nottingham Digestive Diseases Centre, NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, UK. Endoscopy Unit, IRCCS Istituto Clinico Humanitas, Rozzano, Milan, Italy. Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, The Netherlands. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy. Gastroenterology Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.

Alnadhari I, Alwan MA, Salah MA, Ghilan AM.
Urology and Nephrology Center, at Al-Thawra Modern General and Teaching Hospital, Sana'a, Yemen; Department of Urology, Al Wakra Hospital, Hamad Medical Corporation, Al Wakra.

Schnabel MJ, Wagenlehner FME, Schneidewind L.
Department of Urology, Caritas St. Josef Medical Centre, University of Regensburg, Regensburg.
Department of Urology, Paediatric Urology and Andrology, University Hospital Giessen, Giessen.
Department of Haematology/Oncology, University Medicine Greifswald, Greifswald, Germany.

Patel P, Huang C, Molina M, Ramasamy R.
Department of Urology, University of Miami, Miami, FL, USA.
Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.

Milišić E, Zvizdić Z, Jonuzi A, Hiroš M, Milišić L, Mešić A, Begić E.
Clinic of Paediatric Surgery, University Clinical Centre Sarajevo, Sarajevo, Bosnia and Herzegovina.
Clinic of Anaesthesiology; University Clinical Centre Sarajevo, Sarajevo, Bosnia and Herzegovina.
Department of Cardiology, General Hospital "Prim.dr. Abdulah Nakaš", Department of Pharmacology, School of Medicine, Sarajevo School of Science and Technology; Sarajevo, Bosnia and Herzegovina.