2528-7907 2528-7907 S2528-79072021000200047 10.36097/rsan.v1i46.1700 Ecuador Ecuador Ecuador 00 08 2021 00 08 2021 1 46 47 61

2015 17 52 52 32-6 2020 2013 42 2 2 167-172. 2017 91 1-27 2012 28 6 6 579-84 2020 2020 46 3 3 S73-80 2009 31 5 5 569-82 2009 14 1 1 28-33 2017 2020 52 4 4 432-9 2020 49 356-62 2011 57 4-19 2016 77 4 4 365-71 2018 8 2 2 5427 2021 11 21 21 41-52 2020 12 4 4 156-64 2020 87 281-6 Social, I. E 2011 2020 3ra. Edición 2020 5-17 World Health Organization 2020