1659-1321
1659-1321
S1659-13212018000200449
10.15517/ma.v29i2.29852
Costa Rica
Estados Unidos
00
08
2018
00
08
2018
29
2
449
468
[
2014
8
45-63
]
[
2014
90
54
]
[
2009
92
4945-53
]
[
2015
83
1344-51
]
[
2014
81
257-65
]
[
2014
97
4281-95
]
[
2016
85
267-74
]
[
2014
97
3558-69
]
[
2008
177
381-7
]
[
2014
148
109-14
]
[
2015
39
143-9
]
[
2015
84
11-8
]
[
2014
149
145-51
]
[
2010
93
5363-73
]
[
2014
46
1435-9
]
[
2009
71
1127-37
]
[
2015
83
1514-24
]
[
2014
97
3983-99
]
[
2015
98
6848-55
]
[
2015
98
6856-64
]
[
2015
158
25-30
]
[
2005
63
1811-23
]
[
2010
93
5764-71
]
[
2011
94
1325-38
]
[
2012
95
1845-54
]
[
2014
81
906-17
]
[
2016
99
1-24
]
[
2014
144
3-4
3-4
60-71
]
[
2015
16
811
]
[
2009
92
4906-13
]
[
2010
45
]
[
2016
85
625-37
]
[
2015
61
54-60
]
[
2011
89
3551-60
]
[
2016
85
247-53
]
[
2016
196
823-31
]
[
2014
4
7060
]
[
2014
84
155-62
]
[
2016
85
1348-56
]
[
2009
150
1912-20
]
[
2015
81
6324-32
]
[
2015
156
34-9
]
[
2008
70
77-83
]
[
2006
95
214-23
]
[
2014
81
952-8
]
[
2014
82
427-32
]
[
2014
97
4842-51
]
[
2015
175
319-24
]
[
2016
86
642-50
]
[
2008
176
102-14
]
[
2014
8
54-63
]
[
2015
27
395-406
]
[
2016
99
6639-53
]
[
2015
98
3849-58
]
[
2015
98
3849-58
]
[
2014
97
195-201
]
[
2014
60
280-7
]
[
2015
98
3876-86
]
[
2012
78
189-200
]
[
2014
82
1263-72
]
[
2007
68
972-80
]
[
2009
114
109-14
]
[
2014
97
2740-52
]
[
2008
176
3-9
]
[
2015
84
1438-46
]
[
2015
66
449-62
]
[
2015
155
50-5
]
[
2015
83
1249-53
]
[
2013
96
4323-32
]
[
2014
82
1316-22
]
[
2014
82
857-65
]
[
2014
49
16-26
]
[
2015
31
139-49
]
[
2015
99
2201-20
]
[
2015
]
[
2008
86
250-8
]
[
2016
24
747-58
]
[
2016
17
218
]
[
2014
148
593-606
]
[
2011
46
800-6
]
[
2012
47
666-74
]
[
2009
81
1025-32
]
[
2006
65
1516-30
]
[
2009
44
1-9
]
[
2016
99
4795-807
]
[
2014
97
5521-32
]
[
2013
9
244
]
[
2015
84
1206-14
]
[
2009
10
337-41
]
[
2015
98
229-39
]
[
2014
97
5415-25
]
[
2016
99
4629-37
]
[
2014
202
527-32
]
[
2015
175
286-93
]
[
2015
47
89-101
]
[
2009
39
1-13
]
[
2007
68
S232-41
]
[
2013
48
53-8
]
[
2014
97
2763-70
]
[
2015
99
1351-63
]