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Editorial
Topic Highlight
Shahzad Iqbal, Jay P Babich, James H Grendell, David M Friedel 
World J Gastrointest Endosc 4(12):526-531. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.526
Benjamin Tharian, Fotios Tsiopoulos, Nayana George, Salvatore Di Pietro, Fabia Attili, Alberto Larghi 
World J Gastrointest Endosc 4(12):532-544. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.532
Minireviews
Naohisa Yoshida, Nobuaki Yagi, Akio Yanagisawa, Yuji Naito 
World J Gastrointest Endosc 4(12):545-555. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.545
Brief Article
Gokhan Gungor, M Hakan Goktepe, Murat Biyik, Ilker Polat, Tuncer Tuna, Huseyin Ataseven, Ali Demir 
World J Gastrointest Endosc 4(12):556-560. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.556
Hirokazu Takahashi, Eiji Yamada, Hidenori Ohkubo, Eiji Sakai, Takuma Higurashi, Takashi Uchiyama, Kunihiro Hosono, Hiroki Endo, Atsushi Nakajima 
World J Gastrointest Endosc 4(12):561-564. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.561
Case Report
Gabriele Curcio, Marta Di Pisa, Roberto Miraglia, Pieralba Catalano, Luca Barresi, Ilaria Tarantino, Antonino Granata, Marco Spada, Mario Traina 
World J Gastrointest Endosc 4(12):571-574. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.571
Bogdan Radu Mateescu, Andreea Bengus, Madalina Marinescu, Florica Staniceanu, Gianina Micu, Lucian Negreanu 
World J Gastrointest Endosc 4(12):575-578. Published online Dec 16, 2012. doi: 10.4253/wjge.v4.i12.575