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Open-Access Journal
Basic Study
Finbarr O’Sullivan, Joanne Keenan, Sinead Aherne, Fiona O’Neill, Colin Clarke, Michael Henry, Paula Meleady, Laura Breen, Niall Barron, Martin Clynes, Karina Horgan, Padraig Doolan, Richard Murphy 
World J Gastroenterol 23(41):7369-7386. Published online Nov 7, 2017. doi: 10.3748/wjg.v23.i41.7369
Retrospective Cohort Study
Giorgos Bamias, Ioannis Papaconstantinou, George V Papatheodoridis, John Vlachogiannakos, Georgios Maropoulos, Joanna Nikou, Anna Takou, Charalambos Kosmidis, Spyros I Siakavellas, Athanasios Kostas 
World J Gastroenterol 23(41):7387-7396. Published online Nov 7, 2017. doi: 10.3748/wjg.v23.i41.7387
Retrospective Study
Observational Study
Yun Jin, Liang Wang, Yuan-Quan Yu, Dong-Er Zhou, Da-Ren Liu, Jun-Jie Yang, Shu-You Peng, Jiang-Tao Li 
World J Gastroenterol 23(41):7433-7439. Published online Nov 7, 2017. doi: 10.3748/wjg.v23.i41.7433
Prospective Study
Ivan Budimir, Sanja Stojsavljević, Neven Baršić, Alen Bišćanin, Gorana Mirošević, Sven Bohnec, Lora Stanka Kirigin, Tajana Pavić, Neven Ljubičić 
World J Gastroenterol 23(41):7450-7458. Published online Nov 7, 2017. doi: 10.3748/wjg.v23.i41.7450
Randomized Controlled Trial
Manuel Rodríguez, Juan Manuel Pascasio, Enrique Fraga, Javier Fuentes, Martín Prieto, Gloria Sánchez-Antolín, José Luis Calleja, Esther Molina, María Luisa García-Buey, María Ángeles Blanco, Javier Salmerón, María Lucía Bonet, José Antonio Pons, José Manuel González, Miguel Ángel Casado, Francisco Jorquera, the TENOSIMP-B Research Group 
World J Gastroenterol 23(41):7459-7469. Published online Nov 7, 2017. doi: 10.3748/wjg.v23.i41.7459
Case Report