1. Unité d’Endoscopie Interventionnelle, Ramsay Générale de Santé, Hôpital Privé des Peupliers, Paris, France
2. Department of General Surgery Paride Stefanini, Interventional Endoscopy Unit, Sapienza University of Rome, Rome, Italy
3. Department of General and Laparoscopic Surgery, Lilavati Hospital and Research Center, Mumbai, India