0124-0064
0124-0064
S0124-00642018000300314
10.15446/rsap.v20n3.65855
Ecuador
Ecuador
00
06
2018
00
06
2018
20
3
314
318
[
2006
21
2
2
179-83
]
[
2008
10
3
3
433-42
]
[
]
[
2012
60
3-12
]
[
2005
20
3
3
197-203
]
[
2010
30
3
3
21-6
]
[
]
[
]
[
2009
36
4
4
1090-7
]
[
2013
13
11
11
]
[
2002
]
[
2006
21
6
6
673-9
]
[
UNICEF
2000
]
[
2013
40
1
1
26-32
]
[
2007
]
[
2012
]
[
2013
]