2448-8437 2448-8437 S2448-84372022000200181 10.32870/zcr.v6i12.138 Ecuador Ecuador 00 00 2022 00 00 2022 6 12 181 200

2012 9 15-35 2020 2004 9 113-7 2008 2016 3 39-48 1995 2004 2020 2012 2010 85 1 1 159-63 2013 13 2002 214-31 1991 107-12 1972 23-80 2017 2017 2011 2019 2017 2020 6 2 2 2020 95 221-3 2004 2016 2011 2020 29 2016 2001 17 295-320 2003 2011 Madrid 2014 12 2 2 113-40 2018 8 2 2 102-21 1991 2017 2011 2005 6 5 5 2-10 2000 2016 2020 10 20 20 233-47 2005 93 4 4 81-5 1991 2021 2006 17 21-30 1994 2020 78 419-35 2005 2003 2015 15 2011 550-8 2018 2 2 2 67-78 2009 2020 29 6 6 2005 209-36 2001 2011 1997 2011 68-86 World Health Organization (WHO) 2019 2008 91-101 2002