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Catarina Gomes, Rolando Pinho, Adélia Rodrigues, Ana Ponte, Joana Silva, Jaime Pereira Rodrigues, Mafalda Sousa, João Carlos Silva, João Carvalho 
World J Gastrointest Endosc 10(4):74-82. Published online Apr 16, 2018. doi: 10.4253/wjge.v10.i4.74
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