2444-6483 2444-6483 S2444-64832019000500030 10.24875/end.m19000029 México 00 00 2019 00 00 2019 31 30 31

1 ASGE Guidelines 2015 81 54-66 2 ASGE Guidelines 2015 81 67-80 3 2018 6 10 10 1448-60