2307-0420 2307-0420 S2307-04202022000200027 10.18004/sopaci.2022.agosto.27 Paraguay 00 08 2022 00 08 2022 46 2 27 29

1 2003 58 5 5 643-9 2 ASGE Standards of Practice Committee 2010 71 1 1 1-9 3 2004 96 3 3 163-73 4 2012 22 3 3 567-86 5 2020 72 219-28 6 2011 34 2 2 79-82