Endoscopic sleeve gastroplasty: the learning curve oleh Christine Hill, Mohamad El Zein, Abhishek Agnihotri, Margo Dunlap, Angela Chang, Alison Agrawal, Sindhu Barola, Saowanee Ngamruengphong, Yen-I Chen, Anthony N. Kalloo, Mouen A. Khashab, Vivek Kumbhari