0034-7744
0034-7744
S0034-77442020000200623
10.15517/rbt.v68i2.38899
Mexico
Mexico
Mexico
Ecuador
Mexico
00
06
2020
00
06
2020
68
2
623
640
[
2007
9
1
1
251-60
]
[
2015
]
[
1993
3
3
3
506-17
]
[
2015
96
6
6
1255-74
]
[
2016
18
1
1
1-38
]
[
1996
41
1
1
75-100
]
[
2019
10
1
1
11-23
]
[
2010
13
2
2
204-16
]
[
2016
113
23
23
6388-96
]
[
2005
1
]
[
2014
24
5
5
536-40
]
[
2012
77
1
1
32-40
]
[
2012
14
1
1
133-42
]
[
2019
6
16
16
65-77
]
[
2014
22
1
1
12-32
]
[
2012
93
12
12
2533-47
]
[
2012
5
1
1
3-21
]
[
2010
91
7
7
1962-3
]
[
2018
93-110
]
[
2003
]
[
1992
24
3
3
440-6
]
[
1999
16
4
4
1081-5
]
[
2014
]
[
2009
106
2
2
349-50
]
[
2009
55
5
5
327-41
]
[
2000
14
6
6
1693-703
]
[
2004
20
2
2
239-43
]
[
2014
62
1
1
217-39
]
[
2012
14
2
2
357-67
]
[
2009
12
6
6
561-82
]
[
2017
210
343-8
]
[
2008
24
1
1
73-93
]
[
2011
76
4
4
461-9
]
[
2001
4
379-91
]
[
2011
39-54
]
[
1975
56
1459-61
]
[
2007
139
3-4
3-4
462-7
]
[
1973
54
2
2
427-32
]
[
2009
24
11
11
599-605
]
[
2016
7
12
12
1451-6
]
[
1971
52
4
4
577-86
]
[
2006
113
2
2
363-75
]
[
2008
320
5872
5872
71
]
[
2005
]
[
2012
3
1
1
87-99
]
[
2017
67
9
9
799-807
]
[
1984
61
3
3
376-82
]
[
2008
45
1364-71
]
[
1986
]
[
1991
7
59-67
]
[
2000
14
6
6
1666-75
]
[
2008
2
]
[
2008
14
644-54
]
[
2011
48
3
3
777-87
]
[
2006
22
267-76
]
[
2006
149
133-40
]
[
2011
82
4
4
1249-61
]
[
1978
59
716-23
]
[
2016
115-22
]
[
2007
82
4
4
573-90
]
[
2017
]
[
2007
78
1
1
191-200
]
[
2016
16
3
3
]
[
2015
86
2
2
431-9
]
[
2008
117
1725-31
]
[
2017
119
51-68
]
[
R Core Team
2017
]
[
2014
63
1-69
]
[
2010
93
1-6
]
[
2003
14
515-30
]
[
2006
15
2
2
3-12
]
[
2010
81
3
3
839-45
]
[
2000
32
1
1
174-84
]
[
1998
237
1-219
]
[
2008
25
69-90
]
[
2015
93
4
4
315-22
]
[
2012
3
1
1
53-66
]
[
2003
40
6
6
984-93
]
[
2003
580-621
]
[
2012
33
131-50
]
[
1992
24
3
3
402-7
]