0120-9957 0120-9957 S0120-99572020000300304 10.22516/25007440.464 Colombia Colombia Colombia Colombia 00 09 2020 00 09 2020 35 3 304 310

1 2009 1 3 3 160-8 2 2015 3 2012 16 1 1 200-14 4 2017 44 4 4 575-97 5 2011 26 4 4 243-52 6 2010 71 1 1 1-9 7 2016 8 2016 28 1 1 75-82 9 2013 28^s3 28^s3 3 18 10 2013 45 9 9 744-9 11 2015 7 2 2 128-34 12 2013 19 35 35 5877-82 13 2006 20 6 6 1085-101 14 ASGE Standards of Practice Committee 2019 89 6 6 1075-105