2550-6722
2550-6722
S2550-67222020000300147
10.37135/chk.002.12.10
Ecuador
00
12
2020
00
12
2020
12
147
160
[
1993
]
[
2010
21
101-12
]
[
2006
]
[
2010
]
[
2007
]
[
2000
]
[
1991
]
[
2010
37
149-59
]
[
1998
]
[
2017
39
327-67
]
[
1943
]
[
2002
359-72
]
[
1902
]
[
1988
]
[
2005
]
[
2006
]
[
2000
80
3
3
603-4
]
[
2014
]
[
1965
]
[
2006
8
36-42
]
[
2010
]
[
1997
]
[
2007
]