2312-3893
2312-3893
S2312-38932020000100134
10.18004/rvspmi/2312-3893/2020.07.01.134-140
Ecuador
Ecuador
00
03
2020
00
03
2020
7
1
134
140
[
2015
10
8
8
973-6
]
[
2007
30
8
8
684-7
]
[
2017
58
2
2
312-9
]
[
2016
12
15
15
857-64
]
[
2009
20
2
2
132-51
]
[
2015
1
1
1
25-7
]
[
2019
12
76
76
4521-4
]
[
2018
9
560
]
[
2018
13
10
10
]
[
2017
207
7
7
282-3
]
[
2016
12
14
14
775-80
]
[
2013
16
2
2
207-4
]