2444-6483 2444-6483 S2444-64832019000600062 10.24875/end.m19000051 México 00 00 2019 00 00 2019 31 62 64

1 1993 38 4 4 680-3 2 2019 3 2018 40 3 3 164-8 4 2003 57 156-9 5 2017 16 918-26 6 2013 144 341-5 7 ASGE Standards of Practice Committee 2019 89 6 6 1075-1105.e15 8 2013 58 4 4 1100-9 9 2012 24 1 1 1