0016-7169
0016-7169
S0016-71692015000200191
10.1016/j.gi.2015.04.014
MX
CR
MX
00
06
2015
00
06
2015
54
2
191
199
[
1984
34
24-45
]
[
1980
70
1-28
]
[
1982
87
1735-41
]
[
2000
]
[
1991
309-21
]
[
1964
357-62
]
[
1970
88
]
[
2013
65
447-55
]
[
1982
10
103-6
]
[
1990
80
483-7
]
[
1959
12
205-14
]
[
1976
81
4885-908
]
[
1961
1
229-33
]
[
2007
2007
Houston, Texas
]
[
1995
85
1635-47
]
[
1998
37
95-102
]
[
1964
362-79
]
[
1964
357
]
[
1981
71
827-43
]
[
1997
1
39-45
]
[
2000
4
267-84
]
[
2000
90
468-82
]
[
2000
263-8
]
[
1991
401-21
]
[
1989
343
291-8
]
[
1991
339-66
]
[
1969
93
514-23
]