1870-7203
1870-7203
S1870-72032021000200214
10.35366/100445
México
México
México
Mexico
00
06
2021
00
06
2021
19
2
214
220
[
2006
74
11
11
599-604
]
[
1995
63
337-40
]
[
2014
82
8
8
552-7
]
[
1997
177
1
1
210-4
]
[
2014
93
2
2
138-43
]
[
2000
21
^sA
^sA
A
S55-60
]
[
2013
81
259-71
]
[
2018
16
1
1
72-5
]
[
2016
62-72
]
[
2005
105
1247-50
]
[
2016
30
1
1
26-34
]
[
2007
34
421-41
]
[
2010
39
1
1
43-9
]
[
2009
1
3
3
138-43
]
[
ACOG educational bulletin
1998
61
1
1
79-86
]
[
2011
79
5
5
298-302
]
[
2018
8
2
2
e142-5
]
[
2015
45
6
6
1312-6
]
[
2011
148
2
2
e95-102
]
[
2012
9
3
3
153-8
]
[
2011
24
10
10
1273-6
]
[
2010
36
2
2
254-9
]
[
2007
35
3
3
187-92
]