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Antonio Z Gimeno-García, Enrique Quintero 
World J Gastrointest Endosc 7(2):94-101. Published online Feb 16, 2015. doi: 10.4253/wjge.v7.i2.94
Alina Boeriu, Cristian Boeriu, Silvia Drasovean, Ofelia Pascarenco, Simona Mocan, Mircea Stoian, Daniela Dobru 
World J Gastrointest Endosc 7(2):110-120. Published online Feb 16, 2015. doi: 10.4253/wjge.v7.i2.110
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